change publicUploadButtonMock to public_upload
change publicUploadButtonMock to public_upload

Changed jQuery selector for public preview to public_upload to correctly show preview
andreas-p/nextcloud-server,bluelml/core,andreas-p/nextcloud-server,pixelipo/server,endsguy/server,Ardinis/server,michaelletzgus/nextcloud-server,Ardinis/server,andreas-p/nextcloud-server,pmattern/server,owncloud/core,michaelletzgus/nextcloud-server,owncloud/core,owncloud/core,xx621998xx/server,IljaN/core,nextcloud/server,bluelml/core,lrytz/core,cernbox/core,endsguy/server,nextcloud/server,owncloud/core,pollopolea/core,pollopolea/core,lrytz/core,pmattern/server,xx621998xx/server,jbicha/server,sharidas/core,andreas-p/nextcloud-server,whitekiba/server,whitekiba/server,pollopolea/core,michaelletzgus/nextcloud-server,IljaN/core,bluelml/core,Ardinis/server,whitekiba/server,pmattern/server,xx621998xx/server,endsguy/server,IljaN/core,Ardinis/server,IljaN/core,endsguy/server,pmattern/server,pollopolea/core,bluelml/core,pixelipo/server,pixelipo/server,jbicha/server,sharidas/core,cernbox/core,whitekiba/server,endsguy/server,xx621998xx/server,whitekiba/server,sharidas/core,owncloud/core,cernbox/core,lrytz/core,xx621998xx/server,jbicha/server,pixelipo/server,cernbox/core,nextcloud/server,cernbox/core,Ardinis/server,sharidas/core,nextcloud/server,michaelletzgus/nextcloud-server,IljaN/core,phil-davis/core,jbicha/server,sharidas/core,lrytz/core,jbicha/server,pixelipo/server,pollopolea/core,andreas-p/nextcloud-server,bluelml/core,pmattern/server,lrytz/core