Bootstrap i18n

I added fabric commands to simplify the task of running the Django admin commands to generate strings files and compile them. These require that GNU gettext is installed.

I gitignored .mo files because they are generated by the messages compiler.

I followed the guide https://docs.djangoproject.com/en/1.0/topics/i18n/ to set up the javascript gettext support.

The messages file for treemap was generated by the fab task and is picking up all the gettext calls from the registration templates.

I skipped over adding translation tags to the instance page at /{instance_id} since it has no real content.