Location type 'select' (for all entities) AND Phone type should be required

Several problems w/ full and inline contact editing:

• location type for all entities should be required, currently allowing empty value
• location type when adding 'another' of the same entity (e.g. second email, phone, etc) should default to the 'next' value - e.g. if first email is 'Work', then next add should select another option - default if not already used or next in list (this may be fixed once the required property is fixed - but please verify that)
• Phone Type should be required and set to default, currently allowing empty value
• Address block - duplicate is_primary checkboxes "Primary location for this contact". In 4.6, the second checkbox is 'Billing location for this contact' (e.g. is_billing).