Separate and Clean up Routes, Nav active highlighting, Twitter Login

-Cleans up application with:
-routes for Chatter, Players and Schedule (TBD)
-adds Active Route highlighting in the nav-bar with 'zimme:iron-router-active'
-removed rollover states for Team Selection of players, added click state active highlighting

Also: 
-adds Twitter login

Chatter page: 
![image](https://cloud.githubusercontent.com/assets/606131/5253551/f777ccd0-795c-11e4-85c5-b79bf398f793.png)

Player page: 
![image](https://cloud.githubusercontent.com/assets/606131/5253554/00335c5e-795d-11e4-83ab-ecfae35962a1.png)