Fix bug #6462 (Go to First Error/Warning command broken) - Screen out
header sections (even invisible ones) when looking for first clickable row
in results table.
With unit tests.

Speaking of linting, also fixes two whitespace errors in DocumentCommandHandlers.
update fullPath-to-DOM id cache after rename. cleanup cache handling.
code review comments
Merge pull request #6520 from adobe/jasonsanjose/issue-6482-again

Fix for deleting file from tree after rename from tree
Merge pull request #6466 from adobe/pflynn/fix-goto-first-error

Fix bug #6462 (Go to First Error/Warning command broken)