Release qr-code · 9001/copyparty

new features

display a server qr-code (screenshot) on startup
- primarily for running copyparty on a phone and accessing it from another
- optionally specify a path or password with --qrl lootbox/?pw=hunter2
- uses the server's exteral ip (default route) unless --qri specifies a domain / ip-prefix
- classic cp437 ▄ ▀ for space efficiency; some misbehaving terminals / fonts need --qrz 2
new permission G returns the filekey of uploaded files for users without read-access
- when combined with permission w and volflag fk, uploaded files will not be accessible unless the filekey is provided in the url, and G provides the filekey to the uploader unlike g
filekeys are added to the unpost listing

renaming / moving folders is now at least 120x faster
- and that's on nvme drives, so probably like 2000x on HDDs
uploads to volumes with lifetimes could get instapurged depending on browser and browser settings
ux fixes
- FINALLY fixed messageboxes appearing offscreen on phones (and some other layout issues)
- stop asking about folder-uploads on phones because they dont support it
- on android-firefox, default to truncating huge folders with the load-more button due to ff onscroll being buggy
- audioplayer looking funky if ffmpeg unavailable
waveform-seekbar cache expiration (the thumbcleaner complaining about png files)
ie11 panic when opening a folder which contains a file named up2k
- turns out <a name=foo> becomes window.foo unless that's already declared somewhere in js -- luckily other browsers "only" do that with IDs