Automatic entry box focus

This plugin puts the focus on the entry box if the user clicks in the
message window.
Fix nickchange closure (d'oh)
Fix #70 by removing possible colors prefix
Renamed to Refocus

Removed css file.
Updated README.
Merge pull request #71 from candy-chat/feature/autofocus

This plugin puts the focus on the entry box if the user clicks somewhere in the message list.
Updated root README with Refocus plugin
Colors plugin: use before-render
Merge branch 'master' into dev