Convert legacy image url to Vignette's one
Clean up
Fixed related articles image width
Refactored things, cleaned up the code
Unified parameters order, removed defaults, added list of thumbnailer modes
Unit tests for Thumbnailer module
Changed deepEqual to equal
Changed thumbnailerMode to mode; made some methods private; beautified URL construction
Support avatars
Fixed computedHeight
Merge branch 'master' of https://github.com/Wikia/mercury into HG-213
Merge branch 'master' of https://github.com/Wikia/mercury into HG-213

Conflicts:
	public/scripts/mercury/modules/Thumbnailer.ts
Fixed namespacing
Fixed namespacing
HG-213 change Array type to string[]
Merge pull request #264 from Wikia/HG-213

HG-213 Use Vignette as thumbnailer