Add Mozilla Persona Omniauth Gem and initializer
Add (ui-only) Persona button to login modal
Add basic Persona functionality

1. No session integration yet, so automatic login/logout events are suppressed.

2. Popup blockers must be disabled: submits form to target="_blank"
Use AJAX for submitting Persona credentials.

Fixes issue with needing to unblock popups.
Make Persona configurable
add basic coding style guidelines to CONTRIBUTING.md
Fix display host for onebox
Fix weirdly indented code
Update nginx.sample.conf
Position the selected post more reliably below the header
implement translations into static pages (FAQ, TOS) + an example of CZ translation
update both the title & the category when editing the first post

using the "edit this post" action beneath the post.
Fix order dependency in site_setting_spec.rb
The spec contained an order dependency which would cause the default
bool test to fail. You can confirm this by running the spec with the
option "--order rand" a couple times. This dependency was caused by
surprising behavior in SiteSetting::setting as shown below:

SiteSetting.setting(:bool_setting?, false)
SiteSetting.refresh!
SiteSetting.bool_setting? #=> false
SiteSetting.random_setting = true
SiteSetting.bool_setting? #=> true
SiteSetting.setting(:bool_setting?, false)
SiteSetting.refresh!
SiteSetting.bool_setting? #=> true!

The spec is merely desriptive, and I have labeled what I think could be
possible bugs.
Merge branch 'persona-integration' of git://github.com/callahad/discourse
Let's default Persona to off right now, change button text
Check when logging in whether a auth provider is enabled, including specs
Merge pull request #317 from goshakkk/contrib-coding-style

Add basic coding style guidelines to CONTRIBUTING.md
Merge pull request #321 from tijmenb/fix-hosts-in-oneboxer

Fix display hosts in oneboxer
Caching for topic/category RSS feeds
Using anonymous_etag() now
Merge pull request #340 from tms/post-scroll-peekaboo

Position the selected post more reliably below the header