Add special annotation for progress fraction to reduce ContentSummaryLog queries.
Add special annotation for progress fraction to reduce ContentSummaryLog queries.

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