Add a series of scripts to help maintaining the translations files
Add intial Japanese files
Progressing on Japanese transalations
Add missing Italian translations to challenge (untranslated)
Merge pull request #177 from vaussard/automate_new_translations_merge

Add a series of script to help on translations / Add Japanese translations
Fix challenge-textures.qrc for missing .qm files
Japanese translations for challenge
Fix new language script to add .qm into challenge-textures.qrc
Added Italian translation to challenge (thanks Ezio Somà) + minor translation updates.
Merged translation updates from release-1.2.x
 Added Italian translation of challenge's online help (thanks Ezio Somà)
Merge branch 'release-1.2.x'