Wire up search to the Feed page UI

I tested by doing searches for "some search terms", as well as filters
like "term @author" and "@author #tag". This turned up some search bugs,
and I simplified the query processor quite a bit by removing regexes.
add a reversible field to editor
Merge pull request #6 from chrisklaiber/master

Wire up search to the Feed page UI
Add serving parameters so the site is available from other devices

With this parameter, you can hit your machine's IP address from any device on the same network. For example, I can access my local dev site from http://192.168.0.129:8080 from my mobile phone. Then, I can test the mobile-friendliness of the design.

Test Plan:
See above.
Merge remote-tracking branch 'upstream/master'