Data validation and input improvements.
New Features:
- Data validation - Numbers have to be numbers and the like.
- Input improvements - Date and time selection greatly improved.
- Layout improvements - Improved but ongoing.
- Privacy statement - Improved but ongoing.
- Overall statistics - Improved but ongoing.
- Tracker ownership enforcement - Users can only collect data with their own trackers
- Session management - Sessions automatically pruned if older than 60 minutes.