QmlDesigner.MetaInfo: fix for the item library

Row has to be a Row.

Change-Id: Ibf84d11ec36790b8fea1943ea4a10e97dfbf98d4
Reviewed-by: Marco Bubke <marco.bubke@digia.com>
QmlDesigner.Rewriter: support global Qt enums

The global Qt enums are hardcoded.

Change-Id: I5342ef35c63fccecbcfec3aeaec903d99ab63966
Reviewed-by: Marco Bubke <marco.bubke@digia.com>
QmlDesigner.PropertyEditor: enabling layout direction

This has been fixed in the rewriter and meta info system.

Change-Id: I4c78a915a05c01b33f779cf255c5b9c67d3e0001
Reviewed-by: Marco Bubke <marco.bubke@digia.com>