provide function for updating the database scheme
provide function for updating the database scheme

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