Kill "new file" sidebar

[Vladimir Prus]

Jens Dagerbo wrote:

>> > We don't have to remove it, why not just disable it in the default
>> > profile for C++?
>>
>> Alas, that will disable Ctrl-N ("New file" menu item) as well, because
>> they are part of the same plugin.
> 
> Right. Please nuke the sidebar. The plugin itself still has some utility,
> but the sidebar mainly takes up space.

Ok, I'll do this.

> It's already possible to hide the sidebar, btw - see the global settings.
> Removing the code would be preferable, of course.

BTW, is there a way to programmatically invoke global settings dialog, and
open it on specific page? If yes, I'll add "Configure templates" button to
the "New file" dialog.

- Volodya