Migrate org groups (hr_group -> admin_group, primary_group -> member_group)

[simensandhaug]

Changes

• Change DB fields for hr_group and primary_group to admin_group and member_group for organizations
• Change name and group type for all responsible groups
• New ResponsibleGroup.name format "Organization:Type" instead of just "Type"
• ResponsibleGroup.group_type format "Type" (e.g ADMIN or MEMBER)
• Every ResponsibleGroup also has a pointer to a Group object that has outdated names
  • Previous : "Organization:(HR|Medlem):uuid"
  • New : "Organization:(Admin|Member):uuid"
• These changes make it easier to navigate api.indokntnu.no/admin and the names are more descriptive
• Change necessary instances of hr_group and primary_group