Add a helper field to determine which send element a form element is being...

Add a helper field to determine which send element a form element is being used for.  For example, the send_contact element can determine whether it's being used for the sender or the recipient.

Clean up send_contact default handling and get the send_multiple element working more consistently.


Signed-off-by: Allie Micka <allie@advantagelabs.com>