Added the edit a survey feature

And it works perfectly
Merge branch 'dev' of https://github.com/FireGhost/app_surveys into dev
Get automatically survey_id in TakingsController
Merge remote-tracking branch 'origin/nrvnTesting' into dev
Corrected the create a new survey link
New link to add a new questiongroup in survey view
New link to add new question in survey/questiongroup view
Merge remote-tracking branch 'origin/PouleRequestTesting' into dev
New link to add proposition to question in survey view
Merge remote-tracking branch 'origin/PouleRequestTesting' into dev

Conflicts:
	protected/controllers/PropositionsController.php
Fixed some weird stuff after the last merge
Fix locked survey status
Question Types can now be changed
English -> French translations, bugfix
Deleted useless links from surveys views
Removed useless information from views
More views translations
Various presentation improvements
Merge branch 'dev' into FireGhostTesting