choice of thumbnail in form
function in forms.py out of VideoForms object
opengraph implemented to detail-template
opengraph support in channel template
translation and opengraph in collection template
figuring out to override audioThumbURL db model
detail view has complete opengraph
Merge branch 'dev' into opengraph

Conflicts:
	dependencies.txt
	lambdaproject/settings/base.py
	templates/videos/collection.html
added LOGO_URL, OG_LANG_CODE and SITE_NAME for OG
Merge branch 'dev' into thumbnails
LAMBDA-57: license for videos
LOGO_URL depence on STATIC_URL
language tag in OpenGraph set in settings
cleaned opengraph with blocks
working thumbnail form implementation
latest images of thumbnaikl directory
translations for thumbnails
videoThumbURL gets URL, URL fixed
only show image filenames not complete URL
Revert "LOGO_URL depence on STATIC_URL"

This reverts commit 8207fe782526cc167759e72e205f66abae9a70f6.