Wikia/app — pull request #5743 by nmonterroso (2014-12-11 18:44:19+00:00)
Title: allow a Vignette url to change formats after the url has been generated

@Wikia/platform-team @kvas-damian
https://wikia-inc.atlassian.net/browse/PLATFORM-647

`ImagesService:: overrideThumbnailFormat()` is called after the url for an image has been generated, so we need a way to change the output format from a string :cry: