Added option to launch mplayer in the background to play videos.

The Raspberry Pi browsers cannot yet play video. But mplayer works on the
Pi, so we can trigger it to be launched when the user wants to view a
video. Point tracking is done in the backend Python thread that launched
mplayer, and the browser refreshes the point total when mplayer is closed.

Add `USE_MPLAYER = True` to local_settings.py to enabled this. Note that
it will only work when the browser is on the same computer as the server.
Wrap call to console.log, to avoid errors in browsers without a console object.
Merge pull request #141 from bcipolli/console_error

Wrap call to console.log, to avoid errors in browsers without a console object.
Update README.md

Outdated URLs in the description.  I should do a pull request, but ... we already have 15, this is just a doc file, and this is better than what's there.  I did test each link!
Removing contents of locale folder from git cache
Updated gitignore to ignore contents of locale/
Deleting leftover scripts from earlier i18n work - now in separate repo b/c unrelated to core KA Lite
Migrated files from global utils into central/utils dir
Initial commit of script to create subtitle maps from amara's api.
Deleting leftover data from old YouTube channel indexing.
Got script to a somewhat stable place. Needs debugging.
Adding amara headers.
Merge branch 'develop' of git://github.com/learningequality/ka-lite into subtitles
Replaced headers with all important importable info.
Generate subtitle map is somewhat debugged, and download subtitles has been started.
Fixing jqueryjs block; remove non-jquery script tags.
Tweaks for IE compatibility (HTML/JS fixes and added json2.js).
Removed unneeded div.
Merge branch 'css_cleanup' into ie_fixes
-U function works for download subtitles + minor tweak to gen_sub_map