Maintain focus on row when changing what columns are visible.

[birchamp]

Given that the user is editing Translation Notes or other TSV resource
When the user clicks the column button and adds or removes a column
Then the current row should remain in view and be highlighted as before.

DoD:

changing what columns are visible should keep the current row in outlined in blue.

Details:

Because the length of the page changes when columns are added or removed, we may need to use the calculations that the search uses to maintain the location of a row.

[danielklapp]

Looks good to me. User can see a blue background flash behind a newly added column when selecting from the view columns list making it visible. Tested with translationCore Create - v1.15 build 268-58d9896.