#723 add view for grades download in fun_instructor app
##723-2.1 catch exception when a file is not found, return 404
Translate "Official" in forum

Fixes issue #868.
Slightly improve universities fr translation file
Use lazy translations in forms
Use lazy translation in models

Fixes #898.
Add makemessages_fun translation commands

Go to edxapp and run:

    ./manage.py lms makemessages_fun --settings=fun.lms_dev -l fr

This should update the locale/fr/LC_MESSAGES/django.po file by:

    - adding new, required translations
    - keeping translations that override edx translations
    - removing obsolete translations
Update translations file

This update is performed using the new makemessages_fun script.
Make sure fun theme is translated

Include fun theme in makemessages_fun paths to po files.
Add missing translations from fun theme