OO-3297: refactor the user management to use organization for managing the roles instead of named security groups

OO-984: remove search in favorites and my entries, filter with show all, sort by rating in header too, tweak sort by rating, fix some warnings

OO-605: add a method in the VFS security callback to allow to create folder or not, disallow it for task > assignement

OO-157: optimization of WebDAV, reduce the number of DB queries with lazy loading, specific resolve method, lazy loading of quota...

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branch : bps