Issue #134 - Fix SingleColumnValueFilter JSON

* Modify SingleColumnValueFilter JSON token order to work with Stargate.
I hate that this is a thing all the way down to my bones. We've just signed up for maintenance fixes every time the Stargate team accidentally jostles the ordinal value of the columns. Having said that, I can't think of a better route off the top of my head. I can think of some pretty ornate ones, but none that ultimately remove the responsibility of maintenance from us. I say go with it, but let's make sure to document what's happening here in the wiki.