Fixed several bugs :
- Screen orientation (sensorLandscape everywhere) (otherwise it would
restart the games...)
- KeyListener in the BaseActivity and the BaseTabActivity for menu
dropdown with the menu button
- Beginner mode in games (speed and reading) now shade notes. Still need
to handle rest times and to remove unnecessary features that would slow
down the app.
- Added the piano (with shading keys) for the Speed game lvl 1 so that
you can follow on the piano. Still need to handle rest times aswell
(same issue)