Add user warning when database corruption is encountered
Add user warning when database corruption is encountered

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