Whenever we want to re-use widgets from the former child SplitterOrView,
we must make sure that this doesn't delete it later on.

Before it would use Courier on all platforms, which didn't always look
nice. Now it uses the configured text editor font.

The file paths are now also normal size, at least personally I don't see
why they should use a larger font.

Removed "void" from functions that take no parameters, removed a few
"get" prefixes, etc.

Ugly as hell, that code needs a refactoring once 1.1 is out.

Somehow the required end of line didn't work out on Mac.
We have 2-digit version number parts.

In case the completion shortcut contained the escape key (Mac xcode-like
shortcut settings).

Reviewed-by: Thorbjørn Lindeijer <thorbjorn.lindeijer@nokia.com>

Annoying

isValid -> supportsEditor

Reviewed-by: Roberto Raggi

Make clean and rebuild all work.

Reviewed-by: dt <qtc-committer@nokia.com>