Rest Services and LoginModal addition

Adds REST code currently running on Tomcat. Also cleaned up directories so should be able to easily find stuff.


Also adds the LoginModal to our www/js/components directory.  Currently isn't rendered on our web-page but creates the following window:

![image](https://cloud.githubusercontent.com/assets/5753059/5101375/ea19d14e-6f7c-11e4-9c69-c4f307a1780b.png)
Yep, that should do it. But I also noticed in many spots in the Java classes that a lot of the methods don't have a `public` modifier and a lot of the instance variables (the private ones) don't have any getters or setters we can't access them from anywhere, particularly the MpdConnection class. I can go ahead and fix this stuff real quick if you want.