Moved the common_avatar_* functions to the Avatar class. Typically
either as methods on the object or as static methods. Replaced all the
uses of the functions in other modules.
Actually refactored the method names on these classes to come into
complete compliance with the code standards. Untested; maybe there are
some bad method names now.
darcs-hash:20081222201304-84dde-3effcce0f9ef25fbe0bfebd505037d9ff37252fa.gz
Added an inbox and outbox for direct messages.
Factored common code to mailbox.php. Factored common code with
stream.php to personal.php.
darcs-hash:20080916195346-84dde-b5c846f713a970c41fd1b0671cb333e91f3cb920.gz
