Happy new year! 🎆

New features:
- save collections of filter settings as a filter profile
- filter by categories (restaurant, hotel, car park etc.)
- show scale on map
- button to edit charger information on GoingElectric.de (only works when logged in)
- welcome dialog on first start

Fixes:
- favorites list sorted by distance
- improved stability of real-time availability info loading
- app name "EV Map" -> "EVMap"
- crashes fixed