- Fixed layout problems from previous version

- Add password login option
- Only submit immediately if course is arm
- Do not disarm while course is booking
- Fix extension not working with courses that only have a single date
- Stop automatic submit when server-sided check fails

In pop-up:
- Show which courses are armed
- Highlight the courses of the currently active tab
- Fix and improve arm/unarm all functionality
- Sort courses by nr, name or date by clicking on the table header

- Visualizing marked courses in course overview
- Checking if user action is required in final booking step when submitting automatically
- Improving arming interval for checking when to refresh
- Removing expired courses when new courses are available
- Improved row coloring for courses