Issue 27 what the css

fix(server): Place all production js resources in the `js` subdirectory.
* include.js is excluded because it is served from the root directory.

fix(build): Tons of build cleanup!

* Extract all grunt tasks into separate files in the `grunttasks` directory.
* Only copy over js files that are needed in prod.

fix(build): Do not copy .scss files to dist.