[Collaborative] Fix chat messages (invitation / withdraw invitation) bug + translation.
Merge branch 'dev' of github.com:docdoku/docdoku-plm into dev
Merge branch 'dev' of github.com:docdoku/docdoku-plm into dev
[Collaborative] New interface
Merge branch 'dev' of github.com:docdoku/docdoku-plm into dev