All files have their tags now ordered like in the English one, duplicate tags are removed and the Arabic file has the "about_ea*" tags changed to "about_app*" like in other languages.
In additon for the French language, improved some translations (mainly consistency in usage of infinitive verb forms).
The setting change the display of weeks shown in backend and booking page calendars.
Work plans and break lists in the 'settings' page are still displayed starting on Sunday.
