Pin qtdeclarative in order to allow for the qtdeclarative stable -> dev merge to go through

Change-Id: Idceca103d6cc8e0cac254bdd2eb25be0f6bb0840
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Unpin qtbase and qtdeclarative

...both merges are already in

Change-Id: Ib6a43a88e6a10d0db0c5f471b74709ac9ee5b419
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>