Resolve "Public event URL is guesswork"

Closes #8

See merge request !3

Resolve "Event creation fails"

Closes #6

See merge request !2

Reformat and cleanup

See merge request !1

Currently translated at 97.7% (220 of 225 strings)

Translation: Hack'n'Fun/AlekSIS-App-Paweljong
Translate-URL: https://translate.edugit.org/projects/hacknfun/aleksis-app-paweljong/de/

Merge branch 'copy-from-ticdesk' of edugit.org:Teckids/hacknfun/AlekSIS-App-Paweljong into copy-from-ticdesk

Currently translated at 97.7% (216 of 221 strings)

Translation: Hack'n'Fun/AlekSIS-App-Paweljong
Translate-URL: https://translate.edugit.org/projects/hacknfun/aleksis-app-paweljong/de/

Currently translated at 96.3% (211 of 219 strings)

Translation: Hack'n'Fun/AlekSIS-App-Paweljong
Translate-URL: https://translate.edugit.org/projects/hacknfun/aleksis-app-paweljong/de/