New: Added Admin page (fixes #30)

Fixes #30

Following are the changes made:

* Supports save and reload of config.
* Picks up the config with a higher priority as mentioned in the README.
* Runs with ```grunt admin```
* Uses react and coffeescript

Any suggestions on how to go about on the below points?

* Support of https ( Need certificates. Related to #58? )
* Restart of other servers on save. (Should ```example.coffee``` be made a module?)
* Graph ( depends on #10 )
See previous comment re `properties` module, which is what we're using inside of `config.coffee`. No reason to use something else, I made a conscious decision to chose `properties` over `ini` when I evaluated the two modules, so unless there's a really good reason to use `ini`, use `properties` instead and remove the dependency on `ini`.