Log Message:
Changes 0.9.1:
- Bugfixes:
 * Fix shoot key handling when user exceeds the weapon max strength
 * Fix: Do not apply damage from explosion twice
 * Fix rope size check when attaching
 * Fix some memory leaks
 * And some others...
- One new skin: bugzilla
- One new map: chess map
- 4 new musics: circux, diabolicux, exoticux and woodlux
- Menu improvement: better management of tabs on small screen.
- Cleaner code
- Update translations