OO-1635,OO-722: refactor the ajax by iframe to use XHR, push the current business path to the browser via HTML5 push state, implements back button support via HTML5 History API...

OO-1338: fix double layer of busy flag, fix business path in the pattern Overview>List>Details in "My Courses", "Authoring environment" and "Groups", fix double close events in repository runtime, fix missing node in logging rules (as we start editor with a course node selected)...

OO-990: remove ControllerFactory, RepositoryEntryContext ( must be CourseSiteContext in every case), allow opening an editor by REST URL...

OO-948: make the ContextEntryControllerCreator cloneable, a cloned creator can save request dependent informations between the calls of the different method to prevent multiple loading of the same resource, calculate severals time the permissions...

OO-530,OO-537: as follow-up of the work in 8.3, remove some maps which are not really useful, remove more unused variables, remove the views and their mapping...

OO-522: this fix the most obvious issue with a course that takes too long to load and an impatient user

OO-271: refactor the user session management, move the the logic in its own manager, persist the time out values, make the admin GUI a bit better

OO-293: better back support in course (run), better switch between sites and dynamic tabs, better behavior after closing a tab (stack of previous tabs/sites not limited to 1 site)

OO-111: update business path in e-portfolio, improve back suppport, reenable full text search with jump to the right menu item in home, enable jump from notifications to the right menu item in home... refactor slightly the ContextEntry to enable rewrite of the business path before the jump

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branch : bps

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branch : uzhFixes711