Mediafile fullscreen (fixes #3169)

CHANGELOG

@@ -72,6 +72,7 @@ Core:
 Mediafiles:
 - Fixed reloading of PDF on page change [#3274].
 - Custom CKEditor plugin for browsing mediafiles [#3337].
+- Project images always in fullscreen [#3355].
 
 General:
 - Several bugfixes and minor improvements.

openslides/mediafiles/static/js/mediafiles/list.js

@@ -158,7 +158,7 @@ angular.module('OpenSlidesApp.mediafiles.list', [
                         rotate: 0,
                         visible: true,
                         playing: false,
-                        fullscreen: mediafile.is_pdf
+                        fullscreen: mediafile.is_pdf || mediafile.is_image
                 }];
                 $http.post(postUrl, data);
             }

openslides/mediafiles/static/templates/mediafiles/mediafile-list.html

@@ -60,7 +60,7 @@
               <button class="btn" ng-click="mediafileFit(presentedMediafile)"
                   title="{{ 'Reset zoom' | translate }}"
                   ng-class="presentedMediafile.scale=='page-fit' ? 'btn-primary' : 'btn-default'">
-                <i class="fa fa-arrows-alt"></i>
+                <i class="fa fa-undo"></i>
               </button>
               <button class="btn btn-default" ng-click="mediafileZoomIn(presentedMediafile)"
                   title="{{ 'Zoom in' | translate }}">