Admins will now receive a prompt to use aghost when they use ghost.
It replaces the usual prompt that was irrelevant to admins anyway. Adds option for admins to aghost from the ghost prompt.
Ghosts/observers now have the option to be anonymous in deadchat.
It is a ghost-time preference that doesn't get saved. Admins see anonymous ghosts with a * next to their key. People talking in dead bodies are now always seen only with the name of their body (admins see their keys with a ^).
Added missing EOL in observer.dm
Fixed the message for admins when they use 'ghost'.
Just for clarity, because I'm bad at English. Props to Omega for the wording.
Merge pull request #7226 from Amunak/chat-shenanigans

Minor changes for ghosts, added verb to remain anonymous