Testing Translation Compilation with Each Build
Multiple i18n Fixes for Demographics

- Marked strings for translation
- Set table column types to trigger value formatting
- Formatting percentages passed from view
- Fixed bug with string formatting
Merge pull request #186 from edx/demographics-i18n

Multiple i18n Fixes for Demographics
Updated CLDR Requirements

This should resolve build issues.
Upgraded to Django 1.7

- Changed syncdb to migrate
- Upgraded Django Debug Toolbar and completely gated usage behind environment variable
- Using updated version of Django Announcements
- Updated blocktrans to use trimmed parameter