Page Hopper Component

Initiated using `cmd`/`ctrl`+`k`

![lp-page-hopper](https://cloud.githubusercontent.com/assets/708296/3627262/43eb27e2-0e87-11e4-8c46-75fc8710c814.gif)

would be kinda nice if page_hopper was it's own module that rizzo_app instantiated. Bit cleaner, not exactly a huge priority though.