UI support for adding stock exports
Move StockExportColumn
Only show stock block checkbox on CT domains
Better comment
Misc cleanup
Refactor stock info out of couchexport
Stop hard coding domain name
First stab at filtering header columns
Blank line fixes
Update couchexport submodule

Silly tests were failing..
Cleanup header building
Update couchexport
Fix accidentally committed code
Merge branch 'master' into stock-export
Fix tests
Merge pull request #2478 from dimagi/stock-export

Stock export column