- the default badges (defined in ops/badge_assign.php) are now
based on RAC percentile (top 1%, 5%, and 25%) rather than plain RAC.
- RAC percentile badges are now granted for teams as well as users;
show badges in team page.
- move badge utility functions to inc/util_ops.inc
- DB: add tables for badges and badge/user and badge/team associations
- add script that defines 3 RAC-based badges and assigns them
- add images for these badges
- add admin page for creating/editing badges
- show badges on user page
not done:
- figure out how to send badges to client
- display badges somewhere in the GUIs
- export badges in db_dump
- enable badges by default for new projects