Logging enriched in fsController

- fsController now logs errors from fsService
Fixed wrong id of objects in init script

- fix of identical IDs in init script
Datepicker dropdown icon cannot get focus anymore

- icon cannot get focus
Some sanity checks and more verbose error handling

- small doc and error handling improvements
Psui-selectbox implementations

- initial implementation

[FINISHED #74497222]
[FINISHED #74497446]