Making WikiGrok pull property ID and name from new campaign data

We will soon be storing the property ID and name in the campaign data
stored in the page. This is the client-side code to start using that.
It is backwards compatible with the old data.

Change-Id: I37ea19e5ed30b3672f15a411146b57b119aabd5f
Merge "Making WikiGrok pull property ID and name from new campaign data"