Uses Chrome Headless without sandboxing for running Angular karma tests
add new "test-silently" command run tests in a more discrete way,
Should enhance testspeed on servers and CI
Updates to angular 8 and updates all used components
- removed wrapper class for ngx/pwa LocalStorrace
- removed database lock service due to bugs
- tried to work around a cycle of dependancies
- changed some structure to be more close to default angular
- removed legacy angular packages
- removed date-picker since it was not currently used and
is not compatible anymore
- upgrade tinyMCE
