Refactor 10226


![Tentative Redesign Skin Starting Point](https://f.cloud.github.com/assets/234237/1231849/c102fa78-2875-11e3-8776-1fd7d198abb5.jpg)
This PR addresses important UX/UI areas to get moving forward with external contributors and Manager themers:

* refactors the Sass files to make it far, far easier to make radical Manager changes (color, contrast, general styling) … most of these are now handled simply by updating variables in the colors and vars scss file
* refactors the overall layout templates to bring it inline with modern conventions
* fixes broken actions to restore manager functionality

This is likely not the final design—and there are plenty of items left to clean up—but it gets the ball rolling and certainly a solid starting point to do a test build for increasing community feedback and participation.