Bug 873498 - [MMS] [UX] Compose. Contacts suggestion should not show the contact's photo r=julienw

- Adds a new third arg to Utils.getContactDetails to allow for inclusion of optional fields.
- Tests for thirst arg's "photoURL" option.

https://bugzilla.mozilla.org/show_bug.cgi?id=873498
Signed-off-by: Rick Waldron <waldron.rick@gmail.com>