GUI update (impersonalitation interface)
Merge remote-tracking branch 'upstream/master'
Fixed email bug in users import. Closes #192
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master' into user-csv-bug-fix
gui update
Correcting coding style
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/core/Claroline/CoreBundle/Resources/views/Administration/registrationManagementSelectedWorkspacesAndRoles.html.twig
	src/core/Claroline/CoreBundle/Resources/views/Tool/workspace/roles/workspaceGroups.html.twig
	src/core/Claroline/CoreBundle/Resources/views/Tool/workspace/roles/workspaceUsers.html.twig
Merge branch 'master' of https://github.com/solispauwels/Claroline into GUI

Conflicts:
	src/core/Claroline/CoreBundle/Resources/views/Workspace/renderToolList.html.twig
	src/core/Claroline/CoreBundle/Resources/views/layout.html.twig
	src/core/Claroline/CoreBundle/Resources/views/less/claroline/theme.less
	src/core/Claroline/CoreBundle/Resources/views/less/layout.less
Merge branch 'bootstrap3' into GUI
Merge pull request #199 from maxailloud/master

Correcting coding style
Fixing checkstyle for dnd.js
dnd.js => dragndrop.js
Fixing RegistrationControllerTest
Merge pull request #200 from ngodfraind/bugfix

Fixing checkstyle for dnd.js
Added explanation for users import
Merge remote-tracking branch 'upstream/master' into user-csv-bug-fix
Closes #190
change responsive sizing (col-md-* instead of col-lg-*)
Reorganize topbar and correct it