Add GPLv3 Licensing to Codebase
Add Attribution to Apache Velocity & Glyphicons
Add Sorting Help Tooltip
Add Loading GIF and Fix Footer Bug

- Loading gif displayed until carousel loads
- Footer no longer displayed a little bit below viewport
Add Testing Mode and Minor Bugfixes

- Added Testing Mode and blurb on login page about it
- Fix bug where "Make results public" would always be checked despite
actual internal status