Last batch to fix error "subquery with too many columns" in rails 4 branch #4802
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What? Why?
This PR closes #3708 as I dont see any more errors of this type in the 3-0-stable build.
What should we test?
I think a green build is enough here as the code change is pretty simple.
Release notes
Changelog Category: Changed
Prepare code for rails 4 upgrade.