Updates for Phase 1 Push

- Made /users and /users/view/<username> require log-in. In the future, we
  should restrict this to campus-IP or log-in.
- Edited the edit_user page to include a link to change your password.
- Changed the copyright date to 2013.
- Removed dead link to Government page.
- Added link to constitution.
- Commented out subnavigation bar, since it's incomplete as of now.
- Added link to reset your password on the log-in page.