Renamed get-url and post-url to get-url! and post-url! in line with discussion on #796
Adding get-url and post-url that return channels and don't require callbacks. raw- versions don't decode the output.
Re-organizing dataview gets from callback style to use go blocks.
Converting json to clj objects using transit
No longer have keywords for data due to converstion using transit-cljs.
quickfixes
Adding tests that *-url return channels as a basic start for testing
Merge pull request #815 from onaio/794_transit_decode_json

794 transit decode json