fixing string wrapping errors, linting to make text searches for such errors easier.
Merge pull request #1089 from bcipolli/wrap_error_fixup

fixing string wrapping errors, linting to make text searches for such errors easier.
Fixes for internationalization--one trans error, one test failure.
Merge branch 'release-0.11' of github.com:learningequality/ka-lite into pre_dubbed_video_support

Conflicts:
	kalite/updates/management/commands/videodownload.py