diff --git a/.travis.yml b/.travis.yml
index 808889cb6..50550918b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,6 +8,10 @@ cache:
 python:
   - "3.4"
   - "3.5"
+env:
+  - TRAVIS_NODE_VERSION="4"
+before_install:
+  - "nvm install $TRAVIS_NODE_VERSION"
 install:
   - "pip install --upgrade setuptools"
   - "pip install --upgrade --requirement requirements.txt"
diff --git a/DEVELOPMENT.rst b/DEVELOPMENT.rst
index 0e2358029..97628c1fe 100644
--- a/DEVELOPMENT.rst
+++ b/DEVELOPMENT.rst
@@ -74,6 +74,10 @@ avoid opening new browser windows::
 
     $ python manage.py runserver
 
+Use gulp watch in a second command-line interface::
+
+    $ node_modules/.bin/gulp watch
+
 
 2. Installation on Windows
 --------------------------
diff --git a/gulpfile.js b/gulpfile.js
index 2ba192360..97f513d6c 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -26,6 +26,8 @@ var argv = require('yargs').argv,
     mainBowerFiles = require('main-bower-files'),
     path = require('path'),
     rename = require('gulp-rename'),
+    sourcemaps = require('gulp-sourcemaps'),
+    templateCache = require('gulp-angular-templatecache'),
     through = require('through2'),
     uglify = require('gulp-uglify'),
     vsprintf = require('sprintf-js').vsprintf;
@@ -38,13 +40,44 @@ var output_directory = path.join('openslides', 'static');
  * Default tasks to be run before start.
  */
 
+// Catches all JavaScript files from all core apps and concats them to one
+// file js/openslides.js. In production mode the file is uglified.
+gulp.task('js', function () {
+    return gulp.src(path.join('openslides', '*', 'static', 'js', '**', '*.js'))
+        .pipe(sourcemaps.init())
+        .pipe(concat('openslides.js'))
+        .pipe(sourcemaps.write())
+        .pipe(gulpif(argv.production, uglify()))
+        .pipe(gulp.dest(path.join(output_directory, 'js')));
+});
+
 // Catches all JavaScript files from all bower components and concats them to
 // one file js/openslides-libs.js. In production mode the file is uglified.
 gulp.task('js-libs', function () {
     return gulp.src(mainBowerFiles({
             filter: /\.js$/
         }))
+        .pipe(sourcemaps.init())
         .pipe(concat('openslides-libs.js'))
+        .pipe(sourcemaps.write())
+        .pipe(gulpif(argv.production, uglify()))
+        .pipe(gulp.dest(path.join(output_directory, 'js')));
+});
+
+// Catches all template files from all core apps and concats them to one
+// file js/openslides-templates.js. In production mode the file is uglified.
+gulp.task('templates', function () {
+    return gulp.src(path.join('openslides', '*', 'static', 'templates', '**', '*.html'))
+        .pipe(templateCache('openslides-templates.js', {
+            module: 'OpenSlidesApp-templates',
+            standalone: true,
+            moduleSystem: 'IIFE',
+            transformUrl: function (url) {
+                var pathList = url.split(path.sep);
+                pathList.shift();
+                return pathList.join(path.sep);
+            },
+        }))
         .pipe(gulpif(argv.production, uglify()))
         .pipe(gulp.dest(path.join(output_directory, 'js')));
 });
@@ -117,13 +150,19 @@ gulp.task('translations', function () {
 });
 
 // Gulp default task. Runs all other tasks before.
-gulp.task('default', ['js-libs', 'css-libs', 'fonts-libs', 'tinymce', 'angular-chosen-img', 'translations'], function () {});
+gulp.task('default', ['js', 'js-libs', 'templates', 'css-libs', 'fonts-libs', 'tinymce', 'angular-chosen-img', 'translations'], function () {});
 
 
 /**
  * Extra tasks that have to be called manually. Useful for development.
  */
 
+// Watches changes in JavaScript and templates.
+gulp.task('watch', ['js', 'templates'], function () {
+    gulp.watch(path.join('openslides', '*', 'static', 'js', '**', '*.js'), ['js']);
+    gulp.watch(path.join('openslides', '*', 'static', 'templates', '**', '*.html'), ['templates']);
+});
+
 // Extracts translatable strings using angular-gettext and saves them in file
 // openslides/locale/angular-gettext/template-en.pot.
 gulp.task('pot', function () {
diff --git a/openslides/agenda/apps.py b/openslides/agenda/apps.py
index 3afd71758..81e71f295 100644
--- a/openslides/agenda/apps.py
+++ b/openslides/agenda/apps.py
@@ -6,7 +6,6 @@ class AgendaAppConfig(AppConfig):
     verbose_name = 'OpenSlides Agenda'
     angular_site_module = True
     angular_projector_module = True
-    js_files = ['js/agenda/base.js', 'js/agenda/site.js', 'js/agenda/projector.js']
 
     def ready(self):
         # Load projector elements.
diff --git a/openslides/assignments/apps.py b/openslides/assignments/apps.py
index b58449ede..6ce05de3a 100644
--- a/openslides/assignments/apps.py
+++ b/openslides/assignments/apps.py
@@ -6,7 +6,6 @@ class AssignmentsAppConfig(AppConfig):
     verbose_name = 'OpenSlides Assignments'
     angular_site_module = True
     angular_projector_module = True
-    js_files = ['js/assignments/base.js', 'js/assignments/site.js', 'js/assignments/projector.js']
 
     def ready(self):
         # Load projector elements.
diff --git a/openslides/core/apps.py b/openslides/core/apps.py
index 2f30af10a..d6a0987c8 100644
--- a/openslides/core/apps.py
+++ b/openslides/core/apps.py
@@ -6,7 +6,6 @@ class CoreAppConfig(AppConfig):
     verbose_name = 'OpenSlides Core'
     angular_site_module = True
     angular_projector_module = True
-    js_files = ['js/core/base.js', 'js/core/site.js', 'js/core/projector.js']
 
     def ready(self):
         # Load projector elements.
diff --git a/openslides/core/static/js/core/base.js b/openslides/core/static/js/core/base.js
index 4b3a34c44..8a0885c5d 100644
--- a/openslides/core/static/js/core/base.js
+++ b/openslides/core/static/js/core/base.js
@@ -10,7 +10,8 @@ angular.module('OpenSlidesApp.core', [
     'ngSanitize',  // TODO: only use this in functions that need it.
     'ui.bootstrap',
     'ui.tree',
-    'pdf'
+    'pdf',
+    'OpenSlidesApp-templates',
 ])
 
 .config([
diff --git a/openslides/core/static/js/core/site.js b/openslides/core/static/js/core/site.js
index 7fdf2cb34..ab6c379c1 100644
--- a/openslides/core/static/js/core/site.js
+++ b/openslides/core/static/js/core/site.js
@@ -869,7 +869,7 @@ angular.module('OpenSlidesApp.core.site', [
         return {
             restrict: 'E',
             scope: true,
-            templateUrl: '/static/templates/config-form-field.html',
+            templateUrl: 'static/templates/config-form-field.html',
             link: function ($scope, iElement, iAttrs, controller, transcludeFn) {
                 var field = $parse(iAttrs.field)($scope);
                 var config = Config.get(field.key);
diff --git a/openslides/core/static/templates/index.html b/openslides/core/static/templates/index.html
index 3115a5b0b..c162ff0ad 100644
--- a/openslides/core/static/templates/index.html
+++ b/openslides/core/static/templates/index.html
@@ -10,6 +10,8 @@
 <link rel="stylesheet" href="static/css/app.css">
 <link rel="icon" href="/static/img/favicon.png">
 <script src="static/js/openslides-libs.js"></script>
+<script src="static/js/openslides.js"></script>
+<script src="static/js/openslides-templates.js"></script>
 
 <div id="wrapper" ng-cloak>
 
@@ -199,5 +201,4 @@
 
 </div><!--end wrapper-->
 
-
-<script src="/angular_js/site/"></script>
+<script src="/webclient/site/"></script>
diff --git a/openslides/core/static/templates/projector-container.html b/openslides/core/static/templates/projector-container.html
index 175901169..62e904561 100644
--- a/openslides/core/static/templates/projector-container.html
+++ b/openslides/core/static/templates/projector-container.html
@@ -9,6 +9,8 @@
 <link rel="stylesheet" href="static/css/projector.css">
 <link rel="icon" href="/static/img/favicon.png">
 <script src="static/js/openslides-libs.js"></script>
+<script src="static/js/openslides.js"></script>
+<script src="static/js/openslides-templates.js"></script>
 
 <div ng-controller="ProjectorContainerCtrl" class="pContainer">
   <div>
@@ -42,4 +44,4 @@
   </div>
 </div>
 
-<script src="/angular_js/projector/"></script>
+<script src="/webclient/projector/"></script>
diff --git a/openslides/core/static/templates/projector.html b/openslides/core/static/templates/projector.html
index c58bf49e0..12aa50275 100644
--- a/openslides/core/static/templates/projector.html
+++ b/openslides/core/static/templates/projector.html
@@ -8,6 +8,8 @@
 <link rel="stylesheet" href="static/css/projector.css">
 <link rel="icon" href="/static/img/favicon.png">
 <script src="static/js/openslides-libs.js"></script>
+<script src="static/js/openslides.js"></script>
+<script src="static/js/openslides-templates.js"></script>
 
 <style type="text/css">
   #header, #footer {
@@ -55,4 +57,5 @@
     {{ config('general_event_location') }}
   </span>
 </div>
-<script src="/angular_js/projector/"></script>
+
+<script src="/webclient/projector/"></script>
diff --git a/openslides/core/urls.py b/openslides/core/urls.py
index e7478824c..2e08c6e4a 100644
--- a/openslides/core/urls.py
+++ b/openslides/core/urls.py
@@ -23,9 +23,9 @@ urlpatterns = [
         views.MediaEncoder.as_view(),
         name="core_mediaencoding"),
 
-    url(r'^angular_js/(?P<openslides_app>site|projector)/$',
-        views.AppsJsView.as_view(),
-        name='core_apps_js'),
+    url(r'^webclient/(?P<realm>site|projector)/$',
+        views.WebclientJavaScriptView.as_view(),
+        name='core_webclient_javascript'),
 
     # View for the projectors are handled by angular.
     url(r'^projector.*$', views.ProjectorView.as_view()),
diff --git a/openslides/core/views.py b/openslides/core/views.py
index 23d5d6083..dcef2f0bf 100644
--- a/openslides/core/views.py
+++ b/openslides/core/views.py
@@ -5,6 +5,7 @@ import re
 import uuid
 from collections import OrderedDict
 from operator import attrgetter
+from textwrap import dedent
 from urllib.parse import unquote
 
 from django.apps import apps
@@ -92,72 +93,81 @@ class RealProjectorView(utils_views.View):
         return HttpResponse(content)
 
 
-class AppsJsView(utils_views.View):
+class WebclientJavaScriptView(utils_views.View):
     """
-    Returns javascript code to be called in the angular app.
-
-    The javascript code loads all js-files defined by the installed (django)
-    apps and creates the angular modules for each angular app.
+    This view returns JavaScript code for the main entry point in the
+    AngularJS app for the requested realm (site or projector). Also code
+    for plugins is appended. The result is not uglified.
     """
     def get(self, *args, **kwargs):
         angular_modules = []
         js_files = []
+        realm = kwargs.get('realm')  # Result is 'site' or 'projector'
         for app_config in apps.get_app_configs():
-            # Add the angular app, if the module has one.
-            if getattr(app_config,
-                       'angular_{}_module'.format(kwargs.get('openslides_app')),
-                       False):
-                angular_modules.append('OpenSlidesApp.{app_name}.{app}'.format(
-                    app=kwargs.get('openslides_app'),
-                    app_name=app_config.label))
+            # Add the angular app if the module has one.
+            if getattr(app_config, 'angular_{}_module'.format(realm), False):
+                angular_modules.append('OpenSlidesApp.{app_name}.{realm}'.format(
+                    app_name=app_config.label,
+                    realm=realm))
 
-            # Add all js files that the module needs
-            try:
-                app_js_files = app_config.js_files
-            except AttributeError:
-                # The app needs no js-files
-                pass
-            else:
-                js_files += [
-                    '{static}{path}'.format(
-                        static=settings.STATIC_URL,
-                        path=path)
-                    for path in app_js_files]
-        # Use javascript loadScript function from
+            # Add all JavaScript files that the module needs. Our core apps
+            # are delivered by an extra file js/openslides.js which can be
+            # created via gulp.
+            core_apps = (
+                'openslides.core',
+                'openslides.agenda',
+                'openslides.motions',
+                'openslides.assignments',
+                'openslides.users',
+                'openslides.mediafiles',
+            )
+            if app_config.name not in core_apps:
+                try:
+                    app_js_files = app_config.js_files
+                except AttributeError:
+                    # The app needs no JavaScript files.
+                    pass
+                else:
+                    js_files.extend(app_js_files)
+
+        # Use JavaScript loadScript function from
         # http://balpha.de/2011/10/jquery-script-insertion-and-its-consequences-for-debugging/
-        return HttpResponse(
+        # jQuery is required.
+        content = dedent(
             """
-            var loadScript = function (path) {
-                var result = $.Deferred(),
-                    script = document.createElement("script");
-                script.async = "async";
-                script.type = "text/javascript";
-                script.src = path;
-                script.onload = script.onreadystatechange = function(_, isAbort) {
-                    if (!script.readyState || /loaded|complete/.test(script.readyState)) {
-                        if (isAbort)
-                            result.reject();
-                        else
-                            result.resolve();
-                    }
+            (function () {
+                var loadScript = function (path) {
+                    var result = $.Deferred(),
+                        script = document.createElement("script");
+                    script.async = "async";
+                    script.type = "text/javascript";
+                    script.src = path;
+                    script.onload = script.onreadystatechange = function(_, isAbort) {
+                        if (!script.readyState || /loaded|complete/.test(script.readyState)) {
+                            if (isAbort)
+                                result.reject();
+                            else
+                                result.resolve();
+                        }
+                    };
+                    script.onerror = function () { result.reject(); };
+                    $("head")[0].appendChild(script);
+                    return result.promise();
                 };
-                script.onerror = function () { result.reject(); };
-                $("head")[0].appendChild(script);
-                return result.promise();
-            };
             """ +
             """
-            angular.module('OpenSlidesApp.{app}', {angular_modules});
-            var deferres = [];
-            {js_files}.forEach( function(js_file) {{ deferres.push(loadScript(js_file)); }} );
-            $.when.apply(this,deferres).done(function() {{
-                angular.bootstrap(document,['OpenSlidesApp.{app}']);
-            }} );
+                angular.module('OpenSlidesApp.{realm}', {angular_modules});
+                var deferres = [];
+                {js_files}.forEach( function(js_file) {{ deferres.push(loadScript(js_file)); }} );
+                $.when.apply(this,deferres).done( function() {{
+                    angular.bootstrap(document,['OpenSlidesApp.{realm}']);
+                }} );
+            """.format(realm=realm, angular_modules=angular_modules, js_files=js_files) +
             """
-            .format(
-                app=kwargs.get('openslides_app'),
-                angular_modules=angular_modules,
-                js_files=js_files))
+            }());
+            """)
+
+        return HttpResponse(content, content_type='application/javascript')
 
 
 # Viewsets for the REST API
diff --git a/openslides/mediafiles/apps.py b/openslides/mediafiles/apps.py
index 8f2b69dcf..1732f1299 100644
--- a/openslides/mediafiles/apps.py
+++ b/openslides/mediafiles/apps.py
@@ -6,7 +6,6 @@ class MediafilesAppConfig(AppConfig):
     verbose_name = 'OpenSlides Mediafiles'
     angular_site_module = True
     angular_projector_module = True
-    js_files = ['js/mediafiles/base.js', 'js/mediafiles/site.js', 'js/mediafiles/projector.js']
 
     def ready(self):
         # Load projector elements.
diff --git a/openslides/motions/apps.py b/openslides/motions/apps.py
index a988a7022..5e3a9b39d 100644
--- a/openslides/motions/apps.py
+++ b/openslides/motions/apps.py
@@ -7,8 +7,6 @@ class MotionsAppConfig(AppConfig):
     verbose_name = 'OpenSlides Motion'
     angular_site_module = True
     angular_projector_module = True
-    js_files = ['js/motions/base.js', 'js/motions/site.js', 'js/motions/projector.js',
-                'js/motions/linenumbering.js', 'js/motions/diff.js', 'js/motions/motion-services.js']
 
     def ready(self):
         # Load projector elements.
diff --git a/openslides/users/apps.py b/openslides/users/apps.py
index 5dd738a7f..ba94bea9f 100644
--- a/openslides/users/apps.py
+++ b/openslides/users/apps.py
@@ -6,7 +6,6 @@ class UsersAppConfig(AppConfig):
     verbose_name = 'OpenSlides Users'
     angular_site_module = True
     angular_projector_module = True
-    js_files = ['js/users/base.js', 'js/users/site.js', 'js/users/projector.js']
 
     def ready(self):
         # Load projector elements.
diff --git a/package.json b/package.json
index 01f202033..cb0953cc1 100644
--- a/package.json
+++ b/package.json
@@ -10,17 +10,19 @@
     "es6-promise": "~3.0.2",
     "gulp": "~3.9.0",
     "gulp-angular-gettext": "~2.1.0",
+    "gulp-angular-templatecache": "^2.0.0",
     "gulp-concat": "~2.6.0",
     "gulp-cssnano": "~2.1.0",
     "gulp-if": "~2.0.0",
     "gulp-jshint": "~2.0.0",
     "gulp-rename": "~1.2.2",
+    "gulp-sourcemaps": "~1.6.0",
     "gulp-uglify": "~1.5.2",
     "jasmine": "~2.4.1",
     "jshint": "~2.9.2",
     "karma": "~1.1.0",
-    "karma-jasmine": "~1.0.2",
     "karma-chrome-launcher": "~1.0.1",
+    "karma-jasmine": "~1.0.2",
     "main-bower-files": "~2.11.1",
     "po2json": "~0.4.1",
     "sprintf-js": "~1.0.3",