Features:
- Add events activity to see annotations and events, with color codes, a legend and auto-scrolling to the first future event
- Click on events or timetable events to add them to the calendar

Improvements:
- Improve topic item layout and use scrollable title
- Add more space between labels and • separators throughout the app

Bugs fixed:
- Fix school year calculation: the second term ends on 01/08, not 01/09
- Fix parsing documents with no subject
