FILEMAN-12:Use translation for in the hierarchy

Add localization in the title of FileManager  WebHome
FILEMAN-13:Error in the frensh translation "Pièces kointes"

correct this translation error
Merge pull request #5 from zoubir/master

FILEMAN-12: Use a translation key for the file manager label in the hierarchy
FILEMAN-13: Error in the French translation of "Pièces kointes"