catch exceptions better in last_seen model func
fix bug in vol processing
improve performance for how we save volunteer hours in model
small refactor messup
change volunteer browse view to show account details
change credit to an integer and store cents
add last_seen and full_name properties to vol model
update admin for volunteer; correct unicode repr
move permission field to the User model, and added processing to that effect; tweaked model fields, and migrated
add an initialization command
fix wrong var names in gen_username
Merge pull request #72 from bepetersn/rawstrap

create real permissions architecture, initialization command, generally tweak models and vol. browse
move hours and credit to be read-only properties
fixed hours and credit
got rid of credentials from browse as well as from model
migrate to delete credentials field
Merge pull request #74 from bepetersn/rawstrap

make read-only model fields into properties; excise credentials for now
modify event types to be more freegeek specific
fixed event repr and moved defaults to form
apply migrations for changes to fields