Bugfixes, enhancements, and randomized answers
- Bugfix: Statistic - Confidence SVG in better size
- Bugfix: font size change on flashcard -> info
- Bugfix: permanent spelling correction 60, 00 m 
- Enhancement: exam displays faster due to ui queue
- Enhancement: popups have overlay on background
- Enhancement: 50/50 layout for settings
- Feature: randomize answers
Merge branch 'master' of github.com:rwolke/thw-theorie

Conflicts:
	app.manifest