Make sure we close the file once we read the content.

Fixes exception thrown on windows in case we can't read the
content or got an repository update. This can happen since
the finish signal is emitted synchronously and the following
code is trying to delete the still opened updates xml file.

Change-Id: I32b252e372ed11c05b04e0d2736400527bdb9a59
Reviewed-by: Niels Weber <niels.weber@digia.com>
Updated changelog with information regarding 1.4

Change-Id: I8bd5c2865c209873df0894b5c36e7d0d73316bff
Reviewed-by: Karsten Heimrich <karsten.heimrich@digia.com>
Bump version

Change-Id: Ica8abbb20a37cf18dd04fd40709b72b73fadcefc
Reviewed-by: Karsten Heimrich <karsten.heimrich@digia.com>