Mainly simplify the user counting component.
It seems that counting IndexedDB has no value anymore,
since even Firefox ESR uses IndexedDB just fine and the LS fallback
proves to be reliable enough
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
