Updates missing/changed fields from the API.

- changes `street` to a concatenated `street_1` and `street_2`
separated by a comma.
- adds AddressFormatHelper for use in views.
- changes `zip` to `postal_code`.
- removes `faxes`.
- adds icon helper for phone type with specific icons for fax, hotline, tty, and voice.
- removes `phone`, `fax`, and `extension` from contacts and adds
`department`.
- adds phones section to contacts.
- moves phone section to partial to reduce duplication in the details view because it is used by both Contacts and the Location.
- adds `alternate_name` in parentheses next to location name.
- adds helper for phone extension to add a customizable prefix (such as 'x') before the digits.
- adds and updates specs based on the new test API content.
- adds setting to VCR to prevent it from turning cassette’s body into
binary.

Closes #644 on GitHub.