Avoid warnings
Simplify
Conference::outcome_map => decision_map
Add MailRecipients class.

Attempting to factor out some of the HotCRP-specific stuff.
Mail tool refactoring, group mails by paper
Quotes
Function renaming.
Derp
DERP
More Mailer refactoring.
Nitlet
send_prep signature fix
Set up $len.
Allow %SITECONTACT%/%SITEEMAIL% aliases.
If index page has PATH_INFO, don't elide the index part.
HotCRPMailer: Full reset
Dbl: add useful function
Minor refactor
Move superclass initializers into superclass.
Refactor wordWrapIndent -> prefix_word_wrap