oc-1548: prevent user from leaving the page while a file upload is in progress
oc-1548: prevent user from leaving the page while a file upload is in progress

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