Merge branch 'master' into feature/stabilization
fr injection on 20140617-005111
cs injection on 20140619-005016
pl injection on 20140526-142752
pl injection on 20140619-111507
PLFENG-2650: Activate Polish on locales-config, gadgets
Merge feature/social-notifications to master
en injection on 20140623-060158
fr injection on 20140623-060158
vi injection on 20140623-060158
ar injection on 20140623-060158
ja injection on 20140623-060158
de injection on 20140623-060158
sv-SE injection on 20140623-060158
it injection on 20140623-060158
pt-BR injection on 20140623-060158
es-ES injection on 20140623-060158
ru injection on 20140623-060158
tr injection on 20140623-060158
zh-CN injection on 20140623-060158