Remove useless query from the homepage

Not really that important, but this page does get hit alot and the
query was not used at all.

Also removed template code that was outside a block tag, so wasn't
getting used either.
Add link to app in worker
Avoiding redirection of the page loaded inside the iframe should resolve the issue https being redirected to http, so finally fix the issue of embedder loaded in an https site
Cleaner fix for redirect issue
Update ssl handling and building docker images

Update our django-sslserver version.  The new version makes it so we
don't need our hack to serve static files.  Fixed misspelling in the
fig ssl_app.

Use --no-cache when building our dev image.  I saw the same issue that
janet saw where we would get 404 errors when fetching .deb packages.
I'm pretty sure this happens because we cache the apt-get update
command.
Allow views to override the editor title
updated video thumbnail
providers API calls should not be redirected, they are locale-independant
adding some selenium tests for titles
Merge pull request #1812 from pculture/gh-1811

updated video thumbnail
Merge pull request #1808 from pculture/editor-title-override

Allow views to override the editor title
Merge pull request #1809 from pculture/gh-1719

Gh 1719
Merge pull request #1805 from pculture/speedup-frontpage

Remove useless query from the homepage
update repo refs
some selenium test udpates
Support more language codes for various places

Updated code so that at the lower levels we accept all language codes
supported by unilangs, not just the ones in the unisubs mapping.  For
example now we can have a SubtitleLanguage with language_code="en-us".

We still don't present these as choices to the user, but allowing them
in the model code lets us handle partners that use these codes.

Switched code from using settings.ALL_LANGUAGES, to the constants in
utils.translations.  The utils.translations variables are easier to
use and also differentiate between supported languages and all
languages.

Clear the team readable/writable langs cache since this will
invalidate the old values.

Removed some cruft from the tern days.
Merge branch 'staging' into gh-1807
Remove link from worker to app
Merge pull request #1814 from pculture/gh-1807

Gh 1807
Remove time/text changes from the API (#1815)