Add slash to app url if not set fix oc-1169
Add slash to app url if not set fix oc-1169

bluelml/core,andreas-p/nextcloud-server,pollopolea/core,andreas-p/nextcloud-server,lrytz/core,cernbox/core,pmattern/server,endsguy/server,cernbox/core,pixelipo/server,endsguy/server,bluelml/core,andreas-p/nextcloud-server,endsguy/server,xx621998xx/server,whitekiba/server,phil-davis/core,pmattern/server,Ardinis/server,bluelml/core,nextcloud/server,xx621998xx/server,nextcloud/server,whitekiba/server,whitekiba/server,IljaN/core,sharidas/core,pmattern/server,IljaN/core,michaelletzgus/nextcloud-server,lrytz/core,owncloud/core,sharidas/core,pollopolea/core,michaelletzgus/nextcloud-server,pollopolea/core,jbicha/server,andreas-p/nextcloud-server,pixelipo/server,jbicha/server,sharidas/core,cernbox/core,IljaN/core,andreas-p/nextcloud-server,pixelipo/server,michaelletzgus/nextcloud-server,sharidas/core,whitekiba/server,xx621998xx/server,Ardinis/server,IljaN/core,endsguy/server,pmattern/server,nextcloud/server,pmattern/server,lrytz/core,bluelml/core,owncloud/core,owncloud/core,lrytz/core,owncloud/core,whitekiba/server,lrytz/core,Ardinis/server,Ardinis/server,Ardinis/server,cernbox/core,IljaN/core,endsguy/server,jbicha/server,xx621998xx/server,xx621998xx/server,owncloud/core,pollopolea/core,nextcloud/server,pollopolea/core,michaelletzgus/nextcloud-server,pixelipo/server,jbicha/server,sharidas/core,pixelipo/server,bluelml/core,jbicha/server,cernbox/core