OO-1645,OO-1595: refactor the personal configuration of calendars, the datamodel of imported calendars, make the description visible and editable...

OO-1536: inline the user's visiting card in the different member list, add a tool in the list as in author list, add close button for the visinting card (if opened in the main window), add close button to the business groups tabs

OO-1541: select the user in the username column and the the next 2, action column now opens the visiting card, fix some wording issues

OO-1124: don't fix the width of disabled rich text and align it, better contrast of disabled primary button, simplify DOM tree of the contact form...

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-336: show title of HTML, PDF, Word and Powerpoint if they exist, make repository entry context consistent, make course node consistent

OO-52 remove undesired elements from users visiting card for invited users and never show users login name (privacy)

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branch : bps