MMS: Add email address to "Phone" field in new contact

This is due to that whether the recipient is a phone number
or an email address,it always call assignContactFromPhone to
pass the data as phone number to Contact.

Call assignContactFromEmail if the recipient address is email
address.In other cases,call assignContactFromPhone.

CRs-Fixed: 409640

Change-Id: I09323c9da1e83221baa41c9007d23973b33431aa