Change sass.exe to be a web server
Merge branch 'master' of https://github.com/madskristensen/WebEssentials2013

Conflicts:
	EditorExtensions/Resources/server/services/srv-rubyscss.js
Remove unneeded using
Add ServerBase for shared Node and Ruby Sass code
Add cleanup routine for Sass Server
Update Sass to 3.4.7
Merge pull request #1606 from davidtme/master

Convert sass.exe to a local web service to speed up compile time