Adds regression test to ensure attributes that pass dirty checking are set on the model.
Adds regression test to ensure attributes that pass dirty checking are set on the model.

lyw07/kolibri,learningequality/kolibri,DXCanas/kolibri,benjaoming/kolibri,benjaoming/kolibri,indirectlylit/kolibri,benjaoming/kolibri,christianmemije/kolibri,benjaoming/kolibri,mrpau/kolibri,learningequality/kolibri,DXCanas/kolibri,learningequality/kolibri,jonboiser/kolibri,lyw07/kolibri,christianmemije/kolibri,jonboiser/kolibri,DXCanas/kolibri,jonboiser/kolibri,indirectlylit/kolibri,DXCanas/kolibri,jonboiser/kolibri,indirectlylit/kolibri,mrpau/kolibri,mrpau/kolibri,christianmemije/kolibri,indirectlylit/kolibri,lyw07/kolibri,lyw07/kolibri,learningequality/kolibri,mrpau/kolibri,christianmemije/kolibri