Workspace template export/import (draft: widgets & moving the template folder).
Merge branch 'master' of https://github.com/claroline/Claroline

Conflicts:
	src/core/Claroline/CoreBundle/Resources/public/js/tool/workspace/workspace_group_management.js
	src/core/Claroline/CoreBundle/Resources/public/js/tool/workspace/workspace_user_management.js
Fixing Workspace\Configuration + broken test + checkstyle
Submodule update.