Tidy up and push sqlalchemy bridge test suite to 100% coverage.
Tidy up and push sqlalchemy bridge test suite to 100% coverage.

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