fixing up money representation for printing check reports
using simpler FixedOffzet tzinfo structure from Django
paypal dates aren't RFC822.
restructuring tests
fixups due to changed imports. replacing some instances of "artshow_settings" with "settings"
coding style and warning fixups
Migration code attempt
Replacing ArtistAccess and Artist.agents with a single Agent model.

And adding peeps.Person.user as the linkage between Artist, Person and User
Agents now have finer grained permissions, and adjusted many views and
helper methods to use these permissions.
Merge remote-tracking branch 'origin/fc2014' into dj16

Conflicts:
	artshow/csvreports.py
	artshow/pdfreports.py
	artshow/utils.py