[Outline View] Keyboard focus follows mouse click focus

[DonnaWuDongxia]

No description provided.

[zhizhangchen]

There's still a bug:

1. Create a project with two pages
2. click the first page
3. Click a field in the property pane
4. Click the second page in the Outline View
   BUG: 1) Outline view does not have keyboard focus so arrow keys don't work.

2. Click the second page again, the second page node should be green-only (no blue outline) but keyboard navigation should start from there if the up/down arrows are pressed. Again, this is like the web browser normally handles keyboard navigation.

[grgustaf]

For the first bug John mentioned, you don't even need step #3. Whenever you click on another page in the outline view, you lose keyboard focus.

And then yes, ultimately the blue outline should probably disappear on a click, too. That's how the browser works. But I can certainly live without that fix, it's even rather nice to make keyboard focus more obvious.

In any case, this still fixes the primary bug so I will merge it. Really, I should have opened three separate bugs, but I think I put them in one.