prosodyctl+util.prosodyctl.*: Start breaking up the ever-growing prosodyctl

util.human.io: New central place for UI helpers

util.prosodyctl.shell: Allow passing path to socket on command line E.g. `prosodyctl shell --socket /path/to/prosody.scok`

util.prosodyctl.shell: Use same config option as module for socket path So now if you set it to a custom value, both the client and the server should use it.

util.prosodyctl.shell: Join socket path with current data directory Don't hardcode socket path as it happens to be in a source checkout. Hold on, it should use the same config option as the module!

mod_admin_socket: Use module API meant for file paths Makes it so that a relative path in the config becomes relative to the data directory.

mod_vcard_legacy: Fix publishing vcard without avatar

mod_vcard_legacy: Remove semi-broken support for multiple avatars Nobody does this. If someone wants to they should go use the PEP method directly instead. Additionally, this got in the way of doing multiple avatars The PEP Way, since it treated each 'data' as a distinct avatar with an optional corresponding 'metadata', which is not how it works.

mod_admin_shell: Remove old variable declaration [luacheck]

mod_admin_socket: Use wrapserver if available Why have a custom accept function when this is net.server's entire thing?