VE-1710: Allow VisualEditor to retrieve Venus flavored Parser output after succesfull save

Venus changes to the Parser output are implemented as Parser hooks and enabled only for Venus skin (otherwise those hooks just return). Fortunetely MediaWiki, including API (api.php) allows to specify skin/context by passing its name as "useskin" GET/POST parameter.

https://wikia-inc.atlassian.net/browse/VE-1710