Updates Angular to version 9.1
Updates most-to-all npm components
Removes deprecated components and npm commands
Updates travis node version
Adjust the whole code base to angular 9 standard
Increase TypeScipt version to 3.8
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