Make sure that it's possible to save a measurement when the stopwatch is paused and new category is added

**Problem**

1. Make sure that no category is selected
2. Start stopwatch
3. Click the 'save' button
4. Create new category
5. Click the 'save' button again
**Expected:** the measurement is saved
**Actual:** the stopwatch remain in the paused state and the google sheet is not updated

**Task**
Fix the problem
