Rearranged the conf according to new params

graphs/keygen_test.go

server/conf/db.go

server/conf/db_test.go

server/conf/gateways.go

server/conf/gateways_test.go

server/conf/global.go

server/conf/global_test.go

server/conf/groups.go

server/conf/groups_test.go

server/conf/node.go

server/conf/node_test.go

server/conf/params.go

server/conf/params.old.yaml

server/conf/params.yaml

server/conf/params_test.go

server/conf/paths.go

server/conf/paths_test.go

server/conf/permissioning.go

server/conf/permissioning_test.go

server/instance.go