Removing internationalized exercises from the repo.  Boo.
Removing deleted testing decorator from coachreports.
Removing deleted testing decorator from distributed.
Removing deleted testing decorator from facility.
Removing deleted testing decorator from main.
Removing deleted testing decorator from updates.
Fixing testing settings to remove unnecessary global dependency.
Adding testing app, so that testing can run, and dummy models.py file.
Bug in i18n data migration file; needed fix for tests.
Merge branch 'develop' of https://github.com/learningequality/ka-lite into issue1422-local
 Tests updated but need modification, commit just to get guidance