mod_cron: Rename variable to fix shadowing (#luacheck)

mod_cron: Add shell command to list registered cron tasks with status

mod_saslauth: Allow plugins to override return SASL condition/text

luacheckrc, mod_http_file_share: Update for module API change (once->on_ready)

modulemanager: Allow modules to expose module.ready - to be called after init This is a shortcut for module:on_ready() which exposes the functionality in an idiomatic way consistent with module.load, module.unload, etc. module.ready runs when the module is loaded and the server has finished starting up.

moduleapi: Rename :once() to :on_ready() for clarity 'Once' is ambiguous - once per what? on_ready() executes its parameter when the module is loaded *and* the server has finished starting.

usermanager, mod_auth_internal_hashed: Support metadata when disabling a user This allows us to store a time, actor, comment and/or reason why an account was disabled, which seems a generally useful thing to support.

util.datamanager: Load first item into index earlier Should get rid of fseek() call

mod_mam: Use for loop in metadata query Some storage drivers will perform cleanup after the last iteration, but if only one step is taken this might be delayed until the garbage collector gets to it.

mod_tokenauth: Ignore invalid grants in storage that have no id