adds role model
rake db migrate
rake db:migrated
Merge branch 'roles2'

test
adds role model and dept_id and role_id to user plus has_many relationships
bug on collection edit page wont mark off as paid
adds logs to debtor show page with collapsible accordion
removes collapses in (now expands out) for logs on debtor show page
fixes collapse down and fixes id name for collapising logs
adds column deleted to logs plus delete action to controller
adds helper method for actualized total
bug user not being recorded on log creation
fixes checkbox by renaming db field, but user creation failing
fixes bug creating user re-orderd if statement in current_user method and has supervisor checkbox working
fixes being_processed collections checkbox