OO-3489, OO-3492, OO-3493, OO-3494, OO-3496, OO-3497: infrastructure to export user data, export  portraits, notes, personal folder, calendars, subscriptions, delete calendars after usser deletion

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

CL-526: display user  interest and user searched interests properties side by side if the two are present

OO-1068: fix flow of QTI choice questions, fix missing end div in choice questions, fix missing chat icon in visit card, fix missing list of owners in repository entry details

OO-1068: split profile in two segments for the profile itself and the home page settings, add a preview, merge the profile and the portrait in the same controller

OO-622,CL-225: remove username from GUI in place where is not really needed and students can see it. Mark others place with //TODO username where it need more works and/or the username is only visible by author/coach/admin... Additional fix the setup sql for MySQL (index too long).

OO-449: show "do not disturb" status in the homepage, list of course members, list of groups members

OO-449 OO-448 OO-450 fixing configuration issues and dependencies in IM module, adding context help and translations, some GUI optimizations

OO-562: fix the difference between the profile editor and the home page about the visibility of mandatory attributes

--HG--
branch : bps