GUI update (impersonalitation interface)
gui update
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
change responsive sizing (col-md-* instead of col-lg-*)
Merge pull request #202 from solispauwels/GUI

GUI update