REL-2063: Avoid creation of Alloc objects for observations that are not found in the mini model.
REL-2063: Plucking some low hanging fruit.
Merge pull request #61 from fnussber/feature/REL-2063

REL-2063: QPT cannot open existing queue plans.
REL-2074: Fixed possible NPE in QPT and cleaned up code.
REL-2074: Changes as recommended by Rob.
Merge pull request #66 from sraaphorst/feature/REL-2074

REL-2074: Fixed possible NPE in QPT and cleaned up code.