Finish contacts API

[nikr]

Implement all Contacts API endpoints:

• [x] create contact
• [x] get person contacts
• [ ] list contact types
• [ ] create contact type
• [ ] update contact type
• [ ] delete contact type
• [ ] list contact methods
• [x] list contact statuses

[nikr]

added get_person_contacts in ed120913

[nikr]

implemented list_contact_statuses() in 4e343cbb1201cfff1f3307ae61ef1d342925b3f5