This commit does the necessary rework to store private messages
as Notices and to support Federation. The plugin's README presents
some more detail about the changes and future work that is still
required to do.
Fixes handle()-related strict warnings such as "Strict Standards:
Declaration of AdminPanelAction::prepare() should be compatible with
Action::prepare(array $args = Array)
Ref. #190
Fixes handle()-related strict warnings such as "Strict Standards:
Declaration of AdminPanelAction::handle() should be compatible with
Action::handle()"
Ref. #190