Removed category useless files and fix bug of no category message
Can link a workspace to a category
Updated workspace link page and workspaces list GUI
Update admin registration into workspace to handle workspace linked to category
Merge branch 'master' of https://github.com/claroline/CoreBundle into associate_workspace_to_category
Fixes GUI bug of workspace linked to incorrect category
layout update
intermediate commit
Added accessibility date for resourceNode
Checked accessibility date in resource search
Initializes accessibility date with parent directory date
Refactors accessibleTo into accessibleUntil
Merge pull request #622 from kitan1982/associate_workspace_to_category

Associate workspace to category
Fixes incorrect migrations
Merge pull request #623 from kitan1982/validity_date_resource

Validity date resource (NEW MIGRATIONS)
partial commit
Use all of searched action, not just the one that respect occurence number, to check for result
Merge pull request #624 from maxailloud/correct_result_occurence_issue_badge

Use all of searched action, not just the one that respect occurence number, to check for result
Plateform availablity configuration.
Translations.