Add access control module
Add access control module

nicola/ldnode,linkeddata/ldnode,nicola/ldnode,dmitrizagidulin/solid-server-unstable,deiu/ldnode,evWork/nds-server,deiu/ldnode,dmitrizagidulin/solid-server-unstable,martinmr/node-ldp-httpd,dmitrizagidulin/solid-server-unstable,linkeddata/ldnode,timbl/ldnode,evWork/nds-server,martinmr/node-ldp-httpd,timbl/ldnode,evWork/nds-server