Merge branch 'training-timer'
Added credits for the italian translation by Andrea Brancaleoni (https://github.com/thypon).
Added changelog message.
Bugfix FExListActivity: state was not properly restored after screen rotation.
Merge branch 'translation' into training-timer
Bugfix: RecoveryTimer will now be stopped, when the last exercise of a workout is finished.
Also updated the changelog.

A better solution might be not to stop the RecoveryTimer but to prevent the timer start.
Preparing release v0.6