sometimes did not work properly

OO-1867: upgrade selenium and arquillian libraries to support Firefox 46 and update the tests to work with them

OO-1261: improved navbar collapse for sites/tabs/tools, tab text overflow handling in css, configurable icons for tabs

OO-1263: refactor user tools to include print, search, imprint, chat and helper, use only the off canvas menu...

OO-1068: fix 2 javascripts errors in IE (navbar in full screen hasn't any width, leading comma), fix an HTML error in contact form

OO-1068, OO-990: set the timeout in navbar javascript shorter, reactivate the commit of index in permanent indexer, fix issue with full text search in the 2 data source for my courses and the authoring environment, fix placement of the extended search

OO-1068 hide offcanvas when clicking anywhere, show a small piece of the left side offcanvas menu to better indicate that there is something there

OO-1068 improve login screen, fix sites ordering and default settings, streamines sites security callback checks, added more security callbacks