Remove duplicate of the 'address' language key.
Remove the 'phone' language key as the 'phone_number' already exists for the same purpose.
Minor typo fixes in English and French translation files.
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).
