mod_http_file_share: Fix measuring how long periodic task take

util.prosodyctl.check: Suggest replacing 'use_libevent' with 'network_backend' It's basically deprecated

util.prosodyctl.check: Nudge towards plural port options The singulars are supposed to be deprecated

util.prosodyctl.check: Fix to not treat some options as misplaced All 'net' providers generate a _port option which must be in the global section, but this mistakenly also warns about these options as well.

util.prosodyctl.check: Suggest replacements for deprecated options #1684

mod_message: Clarify purpose of username field in offline message event Added in 03714861f8fc but it did not appear to be used anywhere until offline message "handling" was added to mod_mam in 8141645e3865

mod_carbons: Reduce line count using new util.stanza attr method

mod_mam: Reduce line count using new util.stanza attr method Since this stanza-id was generated elsewhere in mod_mam, there should be no need for normalization.

mod_http_file_share: Measure current total usage In order to allow monitoring. Especially as there's not much in the way of hard numbers on how much space gets used.

net.server_epoll: Try to make port number related methods sane Previously it was unclear whether "client port" was the port that the client connected to, or from. I hereby declare that the client port is the source port and the server port is the destination port. Incoming and outgoing connections can be distinguished by looking at the_server reference, which only incoming connections have.