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
Whats still missing, but has not a high priority:
- DateTimePicker. Entering dates through the popup works (but only with
a hack in the config-field.component update() method). Displaying values
from the server does not work. Also the localisation is missing. See
attempts to fix it in the sheared module.
- Errors, if the server cannot be reached. Should be solved in another
PR fixing the datasendservice and make generic error messages.
- Custom translations are missing
