Feature request: Make index page and enabled/disabled pages configurable

[kmcquade]

@castrapel mentioned that the index page can be disabled and have it point to another endpoint by modifying the internal routes here

He also mentioned that for modifying the header page, you are working on refactoring that into react. More notes From our chat for your reference:

What you should be able to do for the internal routes is: (r"/?", PolicyViewHandler). Your "/" route should take precedence over the OSS routes here: https://github.com/Netflix-Skunkworks/consoleme/blob/master/consoleme/routes.py