implement recursive collection downloading

add minimal working download

implement new-collection toolbar button

remove deleted resources from the browser list

implement resource deletion

update upload progress bar in update_upload_labels()

don't show number of uploading files when there is only 1 file

implement upload via file dialog

don't show progress percent when the file size is 0

don't crash when the upload is in progress and the window is closed

improve upload progress window

add a very basic upload progress bar

implement dnd upload (without progressbar)

add refresh button

switch DavSession in davbrowser_query_url when a different server is specified

(0) -15 +15 tip

mercurial