Debugger: Add Run-in-Console for LLDB

Task-number: QTCREATORBUG-9650
Change-Id: I74586ca8c89efedbb952218497f7acdae500d3b9
Reviewed-by: Eike Ziller <eike.ziller@digia.com>
QmlDesigner.CopyAndPaste: fix pasting into item without children

Pasting "into" an item that did not have any children did not work.

The method hasNodeListProperty() only return true if the item
already has children.

Change-Id: I00d20df1673758b22d056b8dd64a52c760aabf18
Reviewed-by: Marco Bubke <marco.bubke@digia.com>