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-1362: make the guest login, links for guests and invitation login configurable in the administration GUI

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-763: don't use the container as reference for collection of components but an interface instead, break the inheritence of Panel and flatted it

OO-798, OO-797, OO-796: update the webdav implementation based on Tomcat, make OpenOLAt work under root context, small refactoring of the dispatchers, push raw files dispatcher to its own servlet, implements Digest authentication...

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branch : 80-patch

FXOLAT-424: reduce the number of output in log files from the UserActivityLogging (especially in QTI and EffiencyStatment)

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branch : bps