This is a simple change to our Babel settings that enables use of our

new babel-plugin-django-gettext, used for easier localization. Currently,

no Review Board code makes use of this, but it'll allow us to slowly begin

porting code or using it in new code.
Note that to make use of this, this will require a recent run of

./setup.py develop.

Modified some JavaScript temporarily to make use of the new plugin.

Verified the generated JavaScript was correct.