Changed ClaimAggregate::getClaims to return Claim[] rather then Claims

Some follow up changes can be made, in particular updating Entity::setClaims could similarly be changed.
Not doing this now to keep this commits size maneagable

Change-Id: I9b144f3dceb5e03a03b5e56d5112d8bd7cbfdacb
Merge "Changed ClaimAggregate::getClaims to return Claim[] rather then Claims"