Click to rename works on a timeout.

This is more like the earlier implementation of click-to-rename and provides more
consistent behavior for double clicking to add to working set.

Fix for #9200.
Merge branch 'master' into dangoor/9200-double-click

Conflicts:
	src/project/FileTreeView.js
don't rescan doc when reattaching to editor
Merge pull request #9320 from adobe/randy/issue-9303

Don't rescan doc for html instrumentation when reattaching to editor
make sure there's an editor
Merge remote-tracking branch 'origin/master' into randy/issue-9331
Merge pull request #9332 from adobe/randy/issue-9331

Make sure editor exists
Merge pull request #9308 from adobe/dangoor/9200-double-click

Click to rename works on a timeout.
Merge remote-tracking branch 'upstream/master'