re #136 add the route for the language selection
re #136 upload a view for the languages selection
re #136 add the select box list in the header of the master template for
the language selection
re #136 delete the language selection list box on the user properties
page
re #136 select all the available languages directly in the base view
re #136 each view should return the languages list from now
re #136 delete an useless class in header menu
Merge pull request #167 from jean553/fix_136

Fix 136 - The language selector is now in the master template header