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 bootstrapify file dialog element, improve positioning of callout windows, style table config callout

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

OO-1068 compile bootstrap js, auto switch js source and js-min version based on debug flag, add config defaults for sites and personal menu

OO-1068 OO-1067 flexi form refactoring towards bootstrap, implement default layouts, further simplify DOM