update nav links
update nav links

* stay highlighted on sub-pages
* always indicate that they’re clickable to go “home”
* remove temp content links
indirectlylit/kolibri,lyw07/kolibri,ralphiee22/kolibri,aronasorman/kolibri,MingDai/kolibri,66eli77/kolibri,rtibbles/kolibri,jayoshih/kolibri,jayoshih/kolibri,jamalex/kolibri,66eli77/kolibri,66eli77/kolibri,learningequality/kolibri,jayoshih/kolibri,benjaoming/kolibri,rtibbles/kolibri,jtamiace/kolibri,ralphiee22/kolibri,jamalex/kolibri,indirectlylit/kolibri,mrpau/kolibri,christianmemije/kolibri,rtibbles/kolibri,jtamiace/kolibri,MingDai/kolibri,jonboiser/kolibri,ralphiee22/kolibri,jtamiace/kolibri,lyw07/kolibri,learningequality/kolibri,DXCanas/kolibri,benjaoming/kolibri,DXCanas/kolibri,jtamiace/kolibri,jamalex/kolibri,whitzhu/kolibri,rtibbles/kolibri,learningequality/kolibri,whitzhu/kolibri,mrpau/kolibri,aronasorman/kolibri,indirectlylit/kolibri,benjaoming/kolibri,DXCanas/kolibri,lyw07/kolibri,whitzhu/kolibri,jonboiser/kolibri,66eli77/kolibri,DXCanas/kolibri,jayoshih/kolibri,christianmemije/kolibri,MingDai/kolibri,whitzhu/kolibri,MingDai/kolibri,aronasorman/kolibri,mrpau/kolibri,christianmemije/kolibri,lyw07/kolibri,jonboiser/kolibri,christianmemije/kolibri,ralphiee22/kolibri,benjaoming/kolibri,mrpau/kolibri,aronasorman/kolibri,jonboiser/kolibri,indirectlylit/kolibri,learningequality/kolibri,jamalex/kolibri