Added 3 new functions to bracket.pl:

    sub before_deadline
    Look at cutoff time (epoch) in 'deadline' file.
    Return T iff current time is < deadline
    One Argument:
     0 - tourney (2013m)

    sub write_bracket
    Attempts to append this bracket entry to the cs-brackets file
    Three arguments:
     0 - tourney (2013m)
     1 - name (will substitute _ for ' ')
     2 - code (0.0.0.0.0.0.0.0)

    sub find_acceptable_name
    Finds an acceptable name for this bracket. Tries to avoid collisions with like named
    brackets by appending a number (Marty -> Marty2 if Marty already exists)
    Two Arguments:
     0 - bracket file relative path (2013m/cs-brackets)
     1 - bracket submitter's name
Initial add of deadline file
Added the year to the deadline file description
Removed mhc-brackets and changed to cs-brackets. Don't know why I ever changed that to
begin with.
Oops. Pasted functions that Patrick had already added.
Now checks 'deadline' file to make sure that brackets aren't submitted past the first
game.
Gave up on javascript in make-entry.cgi asking for and submitting a name to save-entry,
so save-entry does it, posts the name + code to itself, and saves it to cs-brackets.

save-entry also respects the 'deadline', so that someone can't load make-entry.cgi before
the deadline and keep it open until after results are in and THEN click submit.