Qt metrics c1.5.1: URL encoding - part 2

Made the URL encoding correction also to the Status box (to complete
the changes made in v1.5). This is pure implementation change and is
not visible to the user.

Change-Id: I801a9d7bcffe656ae9647956c68ba698d56d81cd
Reviewed-by: Tony Sarajärvi <tony.sarajarvi@digia.com>