Add doc about use of metadata per article in custom templates
Add doc about use of metadata per article in custom templates

JeremyMorgan/pelican,alexras/pelican,justinmayer/pelican,Scheirle/pelican,rbarraud/pelican,11craft/pelican,iurisilvio/pelican,UdeskDeveloper/pelican,koobs/pelican,Rogdham/pelican,HyperGroups/pelican,kernc/pelican,ehashman/pelican,deved69/pelican-1,UdeskDeveloper/pelican,eevee/pelican,goerz/pelican,ingwinlu/pelican,number5/pelican,lucasplus/pelican,garbas/pelican,farseerfc/pelican,jimperio/pelican,garbas/pelican,sunzhongwei/pelican,TC01/pelican,jo-tham/pelican,douglaskastle/pelican,kernc/pelican,avaris/pelican,kernc/pelican,ls2uper/pelican,talha131/pelican,Polyconseil/pelican,lazycoder-ru/pelican,crmackay/pelican,karlcow/pelican,gymglish/pelican,sunzhongwei/pelican,abrahamvarricatt/pelican,getpelican/pelican,Summonee/pelican,gymglish/pelican,treyhunner/pelican,number5/pelican,GiovanniMoretti/pelican,janaurka/git-debug-presentiation,lazycoder-ru/pelican,0xMF/pelican,Polyconseil/pelican,jimperio/pelican,jo-tham/pelican,zackw/pelican,abrahamvarricatt/pelican,joetboole/pelican,janaurka/git-debug-presentiation,ehashman/pelican,levanhien8/pelican,douglaskastle/pelican,iKevinY/pelican,deanishe/pelican,getpelican/pelican,goerz/pelican,crmackay/pelican,kennethlyn/pelican,florianjacob/pelican,janaurka/git-debug-presentiation,jvehent/pelican,HyperGroups/pelican,deved69/pelican-1,11craft/pelican,JeremyMorgan/pelican,catdog2/pelican,btnpushnmunky/pelican,gymglish/pelican,ls2uper/pelican,iurisilvio/pelican,zackw/pelican,simonjj/pelican,Rogdham/pelican,51itclub/pelican,treyhunner/pelican,kennethlyn/pelican,jvehent/pelican,crmackay/pelican,florianjacob/pelican,simonjj/pelican,GiovanniMoretti/pelican,number5/pelican,ingwinlu/pelican,koobs/pelican,joetboole/pelican,rbarraud/pelican,talha131/pelican,jvehent/pelican,catdog2/pelican,treyhunner/pelican,ehashman/pelican,UdeskDeveloper/pelican,btnpushnmunky/pelican,lucasplus/pelican,HyperGroups/pelican,Summonee/pelican,sunzhongwei/pelican,Scheirle/pelican,douglaskastle/pelican,ls2uper/pelican,11craft/pelican,koobs/pelican,GiovanniMoretti/pelican,TC01/pelican,Scheirle/pelican,deanishe/pelican,alexras/pelican,TC01/pelican,garbas/pelican,zackw/pelican,arty-name/pelican,iurisilvio/pelican,sunzhongwei/pelican,levanhien8/pelican,iKevinY/pelican,catdog2/pelican,karlcow/pelican,btnpushnmunky/pelican,simonjj/pelican,abrahamvarricatt/pelican,jimperio/pelican,eevee/pelican,eevee/pelican,joetboole/pelican,deanishe/pelican,rbarraud/pelican,kennethlyn/pelican,Summonee/pelican,Rogdham/pelican,lucasplus/pelican,farseerfc/pelican,alexras/pelican,deved69/pelican-1,51itclub/pelican,JeremyMorgan/pelican,goerz/pelican,karlcow/pelican,avaris/pelican,lazycoder-ru/pelican,levanhien8/pelican,florianjacob/pelican,51itclub/pelican