Merge remote-tracking branch 'refs/remotes/upstream/release-0.11.1' into 1067
fix update_srts when 'all' is specified
rewrite extract_new_po to explicitly handle individual as well as all
languages
hackish fix to make the 'all' option run
traverse directory and look for po files instead of looking just one level
combine all po files into one
add option to not download subtitles
extract_new_po returns the location of the po files
get KA strings placed into django.po
changing language pack version on every merge with KA data