Update expected image following PIL->Pillow switch (bug 915742)
Update dev and stage STATIC_URL settings.
Fix test that fails because of DST changes
Merge pull request #1853 from diox/fix-image-test-pilloz

Update expected image following PIL->Pillow switch (bug 915742)
Merge remote-tracking branch 'zamboni/master'

Conflicts:
	mkt/site/tests/test_middleware.py
	sites/dev/settings_mkt.py
	sites/stage/settings_mkt.py