Beginnings of mail

Half done with mail class. Home page gets unread cound and displays appropiate image with mouseover number. Links to mailbox which receives a JSON list of mail. Things to do: formot JSON list into a table, create controls for the user to reply, forward, delete, etc. Trash.
Formatted mailbox and can open received mail
Added date/time to SHUTDOWN logs
Added new, refresh, reply, forward icons. Can send new mail.
Finished mail system

Implemented replies, trashcan, and deletes
Merge branch 'mail' into develop