add same-page check to management. also some special behavior for polling
add same-page check to management. also some special behavior for polling

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