AI Announcements & Verbs

AI can now make station wide announcements. Checks both wireless and radio contact in case of being carded.
Removes AI verbs on death and adds them when restored.
Updates the captain_announcement proc to make it possible to include the announcer and alter the title.
one last thing, stat and other checks above should be done again here,
to prevent somebody opening the message input window, leaving it open and announcing the text after his death/carding.