Enhancement: Add new permissions

Adds new permissions to admin/spaceadmin/user roles
  -  Favorites.List allows / denies the Favorites Listing Request
  -  Favorites.Write is implemented to be enforced on marking/unmark files as favouritesShare
  -  Shares.Write permission denies / allows sharing completely for a user on all share CUD requests. (User, Group)

https://github.com/owncloud/ocis/pull/7700
