Completed the `duration` reaction role setting implementation.
Improved the `Duration` setting type format.
Moved reaction roles to their own module.
Various small bugfixes.
New monolithic `rroles` configuration command.
Complete logging and setting implementation in RR tracker.
Improve strings in RR settings.
Add special `NEWPAGE` manual section parsed by the help command.
Add `tabulated` method for `ObjectSettings` for easy display.
Add `_parse_create` switch for the `Role` setting type.
New `SettingType` `Message` for general message settings.
New setting `greeting_message`.
New setting `greeting_channel`.
New setting `starting_funds`.
New setting `returning_message`.
Add a greeting message hook.
Add initial funds on lion creation.
Data migration v3 -> v4.
