Update apt-cache before install
Fix #1085 : Feed load with a deleted publisher fails
Fix #1082 : wrong ACL check for preview subdef in lightbox with feed
Fix push list display
Fix #1071 : Releasing a validation feedback now requires at least one feedback
Fix #1079 : lightbox zoom : bootstrap introduced a max-width on images
Fix #1087 : Bootstrap introduces a max-width value in lazaret images
Remove thesaurus bouncing when not necessary
Fix #1063 : Fix lightbox's "send my feedback" button on IE8
Fix #1069 : Fix workzone titles display on IE <= 9
Fix #1070 : Fix basket context-menus display on IE8
Fix #1080 : Fix upload cancel button on IE
Fix #1083 : Fix home language selector CSS behaviour
Add description to unit tests
Merge pull request #295 from romainneutron/3.7.6

[3.7] Bug fixes for 3.7.6
Update locales
Fix validation agreement check
Bump to version 3.7.6
Bump to mediavorus 0.1.2
Bump to latest symfony 2.1, Mediavorus 0.1.3