Major fixes: - play_rhythm, fixed black background issue, this activity was not usable. Minor: - fixed confusion around translator context in geography - fixed several typo in english - memory*, more appropriate difficulty level - Added new standard desktop file gcompris.appdata Translation update: - Updated Brazilian Portuguese translation by Rafael Ferreira - Updated Czech translation by Marek Cernocky - Updated Scottish Gaelic translation by GunChleoc - Updated Greek translation by Yannis Kaskamanidis