Implemented Enhancements
none

Implemented Code-Enhancements
🔥 Removed pwa_fix.js (#234)
🗃️ Change default value for avatar (#233)
🗃️ Save operators for future statistics (#232)

Fixed Bugs
🔒 Prevent users from accidentally deleting their account (#230)
🐛 Fixed "Fast-CheckIn" to the last station on a trip (#235)