OO-3189: make the link to about page static, remove the invisible logout link from the index page, cannot open several times the about page without closing it, fix a memory leak in high score

OO-2172: refactor the spring configuration to be more Spring 4 friendly, remove the cycle generate by the properties injection, deployment of course and user in a separate module

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-1349: add sort in the list of settings, fix popup velocity if leading and follow-up time is missing, reload the sites gracefully, default order by begin date of list of settings

OO-1068:  extended search always open in search tab, share link with title, escape in delegate of flexi cell renderer