provide case-insensitive natural sorting
provide case-insensitive natural sorting

This makes OC's naturalsort_defaultcollator case-insensitive

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