Stub out show_user view
Toggle create-{forum,category} buttons baseed on authorization
Extract wrap-echo
Pass curr-community into registration page
Stub out sandbox.clj playground
Replace text/html 403s with "you're unauthorized" flash message errors
Disable post-reply button according to authorization
Stub out /posts/:post-id
Update latest-poster profile link
Add simple md5 avatar system (based on username)