mod_http: Skip querying portmanager when http_external_url when is set When http_external_url is set then the portmanager usage only really serves as a check of whether any http service is enabled at all. Should allow generating an URL from prosodyctl when http_external_url is set.

util.jid: Explicitly check for nil rather than falsy A boolean false should blow up.

mod_storage_xep0227: treat roster metadata pseudo-entry correctly The roster version is stored in a pseudo-item which has the key `false`. The if condition in the touched code attempts to guard against this, but it does not take into account that the jid prepping returns nil instead of false. By moving the jid prepping into the if, we can check for the metadata entry safely.

mod_storage_xep0227: be defensive against empty vCard An empty vCard store may look like the empty table, which does not have the `attr` key, which would then blow up in util.stanza.deserialize.

mod_http: Limit unencrypted http port (5280) to loopback by default Since accessing this port directly over the wider Internet is unlikely to intentional anymore. Most uses will likely be by reverse proxies, by mistake or because of trouble configuring HTTPS. Blocking mistaken uses is just a good thing, letting users send potentially private things unencrypted tends to be Strongly Discouraged these days. Many reverse proxy setups operate over loopback, so listening there instead of all interfaces is a net improvement. Improved automatic certificate location and SNI support has mostly eliminated the need for manual certificate configuration so HTTPS should Just Work once certificates have been provided. For local testing during development, connecting over loopback is likely fine as well. When really needed, `http_interfaces` can still be set. Suggested by Link Mauve

mod_cron: Allow for a small amount of timer drift If the timer activates a bit early then a task might be just a few seconds short of being allowed to run. This would run such a task rather than wait another hour. The value 0.5% chosen so that a weekly task does not run an entire hour earlier than last time.

mod_storage_xep0227: Fix luacheck warnings

mod_storage_xep0227: Add API to iterate all stores of a user

mod_storage_xep0227: Skip self-contacts on roster import

Added tag 0.11.12 for changeset 783056b4e448