moved gems for importing data from vir db to a migration group

updated readme file with more precise setup instructions
introducing new role management

added model for member roles
set up many-to-many assoc between member and role
added base class for roles
cleaned up tests so old stuff wont mess it up
added a way to register roles, and to retrieve acting roles from model
get rid of member_post, it seems everything works now
deleted permission model and belongings
roles controller for adding roles to members
added removal of roles from users

also added search for members in role management
added seed data: test user is group leader in KirDev
fixed loading up roles at startup
added rake task for running all tests with spork
fixed reloading files in spork
added rule check for acting_role
Merge branch 'master' into authorization

corrected insturction on setting up dev environment

Conflicts:
	README.md