Button container should be no wider than suggested topics

The button container sticks out farther than necessary because of the
left margin, causing unnecessary horizontal scrolling at supported
resolutions
Added requirements on postgres and redis-server
Update rack gem, CVE-2013-0262 & CVE-2013-0263
Merge pull request #76 from patdeegan/rack-security

Update rack gem, CVE-2013-0262 & CVE-2013-0263
Merge pull request #72 from tms/topic-page-css

Button container should be no wider than suggested topics
Merge pull request #69 from gammons/master

use shared_examples_for versioning for posts, topics
Merge pull request #74 from spockz/patch-2

Added requirements on postgres and redis-server
Rails cache needs to reconnect - Fixes error with Spork / Guard
Extract the validation of Username format in own class to avoid
complexity in user model object
check_username api now returns correct error message for invalid lengths etc
copy on email mentions
need word-wrap:break-word on preview
Enforce max username length on client
Better username change validation messages
Removed most manual SQL from PostAction
Replace all those `deleted_at`s with `acts_as_paranoid`
Add email_blacklist_regexp to site settings. Not implemented yet.
Enforce entropy on flag text
Remove the distinction between "x replies below" and "x replies"
Can edit deleted posts.