Use proper casing of username in avatar filesystem setup
Use proper casing of username in avatar filesystem setup

* before you could request an avatar for User instead of user
  which sets up the filesystem for that user twice causing
  the sharing codes collision detection to detect a lot of
  collisions

Signed-off-by: Morris Jobke <7f550a9f4c44173a37664d938f1355f0f92a47a7@morrisjobke.de>

nextcloud/server,whitekiba/server,jbicha/server,endsguy/server,whitekiba/server,Ardinis/server,whitekiba/server,endsguy/server,jbicha/server,michaelletzgus/nextcloud-server,nextcloud/server,pixelipo/server,pixelipo/server,xx621998xx/server,andreas-p/nextcloud-server,michaelletzgus/nextcloud-server,jbicha/server,pixelipo/server,michaelletzgus/nextcloud-server,endsguy/server,nextcloud/server,xx621998xx/server,whitekiba/server,Ardinis/server,xx621998xx/server,xx621998xx/server,andreas-p/nextcloud-server,pixelipo/server,michaelletzgus/nextcloud-server,nextcloud/server,andreas-p/nextcloud-server,Ardinis/server,Ardinis/server,pmattern/server,jbicha/server,pmattern/server,endsguy/server,pmattern/server,endsguy/server,jbicha/server,xx621998xx/server,pmattern/server,Ardinis/server,andreas-p/nextcloud-server,andreas-p/nextcloud-server,pmattern/server,whitekiba/server,pixelipo/server