Add ability to search table column names in schema browser

[jezdez]

This is tracking the upstream feature getredash#2484 which was requested in bug 1376458.

[alison985]

@jezdez There are no comments on this issue upstream. Should I @ people in the issue upstream, continuing waiting, or something else?

[jezdez]

@alison985 @'ing people that deal with UI changes would make most sense, yeah.

[alison985]

Upstream is good with us submitting a PR for this.

[alison985]

I currently have it working to search table or search column, but I can't get both searches working at the same time.

[alison985]

@jezdez I have this working!!! 🎈 🎉

The problem is now the CodeClimate report. I got the Cognitive Complexity down from 10 to 6, but that's still higher than 5 and the function is 30 lines not 25 or under. Thoughts?