Upgraded to backbone.js 1.0.0

We had upgraded this in the past I'm sure. Perhaps the major refactoring
we also accidentally downgraded backbone?
Basic style for highlighted results
Set highlighted when markers are clicked
Upgrade to backbone 1.0.0 syntax

Ah, perhaps this is why we didn't upgrade?
Listen for the POI to be highligted and scroll

Toggles the class and scroll to the POI