Wikia/app — pull request #5603 by macbre (2014-12-03 15:08:42+00:00)
Title: CON-2299: AssetsManager::checkIfGroupForSkin - fix a fatal

``AssetsManager::checkIfGroupForSkin`` can be called with an instance of ``Skin`` class (vector skin for instance). Make additional check for ``WikiaSkin`` class when calling ``isStrict`` method.