apple-gcc42 is now in homebrew/dupes
Update rvm install command

1. Prefer homebrew (otherwise macports gets used if installed)
2. It seems that the command has been updated to `\curl -sSL` instead of `curl -L` for clearly specific reasons.
Remove useless table border
center wiki marker in left gutter
add slashes to category page units
PERF: eliminate reflow on topic render
Switch Admin Settings Lists to Select2.js

 - and use jquery.sortable to allow sorting
 - support for autocompletion
add site_setting choices

 - add site_setting choices lists to list entries
 - allows for handy autocompletion using the new select2.js UI
 - automatically merges plugin choices into existing list, allowing for easy extension
BUGFIX: leaving stray views in Ember during navigation
BUGFIX: user screen.width cause it will be more correct
BUGFIX: fix deprecation and regression in cloaking
PERF: cache progressWidth super aggresively to avoid reflows
PERF: optimise check
PERF: optimise check
BUGFIX: cloaking code
PERF: avoid get in sensitive path
FEATURE: CTRL+F is useless, use our search instead
Update INSTALL.md
BUGFIX: flashing incorrect avatar while posting
BUGFIX: incorrect trophy for admins while posting
BUGFIX: progress was 0 of 100 while a post is in transit
BUGFIX: highest_post_number could be incorrect
BUGFIX: incorrect rendering of in-situ post (when its a reply)
BUGFIX: missing avatar on user pages
BUGFIX: allow static assets (avatars) for sites that require login