remove empty plugin.rb file
do not pull hotlinked images when max_image_size_kb == 0
Controls for sorting topic columns
TopicQuery cleanup in advance of custom sorting:

- Move SQL method constants into a module
- Removed unused count methods
- Moved methods that don't return a TopicList into Topic
- Replaced some confusing method signatures
Server side support for custom ordering of topics
FIX: Warnings in Qunit suite
Remove "sorting" color
correct param expansion
new onebox style (similar to blockquotes), spacing for auto-close message, making link badge easier to read
quick fix
remove discourse dependency from message bus
Merge pull request #1651 from awesomerobot/master

New onebox styles, and a few small fixes
do not customize the admin section
header sitemap integration tests