Merge pull request #41 from owncloud/vcategories_db

core/ajax/vcategories/add.php

core/ajax/vcategories/addToFavorites.php

core/ajax/vcategories/delete.php

core/ajax/vcategories/edit.php

core/ajax/vcategories/favorites.php

core/ajax/vcategories/removeFromFavorites.php

core/js/oc-vcategories.js

core/routes.php

core/templates/edit_categories_dialog.php

db_structure.xml

lib/db.php

lib/public/db.php

lib/util.php

lib/vcategories.php

tests/data/db_structure.xml

tests/lib/db.php

tests/lib/vcategories.php