add served-by, cache, and cache-hits headers to thumbnail responses
Merge remote-tracking branch 'origin/master' into PLATFORM-255
Merge pull request #9 from Wikia/PLATFORM-255

add served-by, cache, and cache-hits headers to thumbnail responses
fixing -null- in resulting thumbnail image
added border to sandbox images
adding support for revision in routes
updating routes_test to match new routes, add media_types_test
remove unnecessary binding in let clause
updating sandbox to work with new routes
first pass at supporting ?fill=<color> in thumbnail params
fixing headers. functional programming is hard.
sort query options in filename and add :else clause to fallback to current filename
fixed routes_test, updated media_types_test to have options, and added tests for query_options
add query input for sandbox, have background for test images (to show transparency)
renaming stuff
Merge pull request #12 from Wikia/PLATFORM-423

filled background
adding tests for query-opts->thumb-args
Merge branch 'master' into add-s3-client

Conflicts:
	src/vignette/http/routes.clj
	src/vignette/util/thumbnail.clj
	test/vignette/http/routes_test.clj
	test/vignette/util/thumbnail_test.clj