Core: Utils: Fix compile with Qt4

Change-Id: Ibe4b504b84e467b1450b63bbbc7b569558fd8733
Reviewed-by: hjk <hjk121@nokiamail.com>
Tests: Fix rest of QUrl usages in dumper tests

Change-Id: If8d9a617695edd277875733422206ca3ece2a15c
Reviewed-by: hjk <hjk121@nokiamail.com>