Updated delete to use same code path as update so its consistent and runs async
Added test to check that instance delete is propagated to mongo
pep8 cleanups
Test to check that mongo instances are deleted when a form is deleted
Added photo type in check
Merge pull request #909 from modilabs/904_media_url_on_browse

Added photo type in check for images
Use encoded key to look for attachment fields
Merge pull request #910 from modilabs/904_media_url_on_browse

Use encoded key to look for attachment fields
Fixed string for translation
Updated i18ntool (transifex login page changed)
Updated all translations
Merge pull request #914 from modilabs/updated_translations

Updated translations
Merge pull request #905 from modilabs/delete_instance_deletes_mongo

Delete instance or xform deletes mongo instances
pyxform version bump
Merge branch 'master' into non-greedy-regex

* master:
  Updated all translations
  Updated i18ntool (transifex login page changed)
  Fixed string for translation
  Use encoded key to look for attachment fields
  Added photo type in check
  Test to check that mongo instances are deleted when a form is deleted
  pep8 cleanups
  Added test to check that instance delete is propagated to mongo
  Updated delete to use same code path as update so its consistent and runs async