BUG: Completion widget position and pager focus.

[prabhuramachandran]

When the console widget is used with gui-completion, the positioning of
the completion widget was incorrect the first time a completion was
performed since the size of the widget is initially bogus. Using
sizeHint fixes this. If the paging mode is set to vsplit/hsplit, the
focus was lost after the pager is quit.

[fperez]

Note: I can't reproduce the two problems you describe in my limited testing with PyQt. Perhaps the first is a function of window size/position on the desktop or size of the completion list itself. As for the second, I have no idea why I don't see the problem.

Having said that, I also don't see any problems with the code itself, and the explicit focus reset can't hurt even for those users who weren't seeing the problem. So I'm merging now, many thanks for the contribution!

[fperez]

Merged (with rebase to avoid a recursive merge for just one commit), pushed.

[prabhuramachandran]

The first seems to occur when the console is embedded into another application and can be triggered if the console is too close to the bottom of the screen. The second occurs when you have other widgets along with the console (only then would a loss of focus become painfully obvious). I guess I should have created a simple standalone app to demonstrate this. Thanks for merging regardless though, much appreciated!