Merge pull request #3 from ngodfraind/master

Using EventDispatcherInterface instead of EventDispatcher (sf 2.4)
Fixed undefined method issue (closes #4)
Merge pull request #5 from stefk/custom-actions-fix

Fixed undefined method issue (closes #4)
Some minor correction and sugar for user
Correction to get the end date of the last correction + remove useless code in comment + format date on drop details page + correct temporary access add method
PhpDoc update
Rename method toJson to toArray
Remove useless commented code
Adding listener for displaying validation link on profile badge page
Correct log details creation, used of a renamed method from Drop class close #6
Bug Correction endDate null in getLastCorrectionDate
bug correction on endDate correction nullpointer
bug correction comment was not supposed to be required
template correction

bug correction 3 '}' was in bottom of each file ( {{ parent }}} )
result was some '}' was visible on several page of dropzone.
Corrections available for learners

Add option in dropzone evaluation that allow users to see the
corrections on their copy.
Corrections available for learners 2

Bug correction
ratach the user correction view to the app

ratach the user correction view to the app
Bug correction total grad

Total grad was recalculate when preview mode  activated.
the result was the total grade was null.
bug correction - admin - correction edition route

there was a bug when admin  was trying to edit a correction
Rajout du reporting de correction

Début