Crm 13490

There are 2 cases which are taken care by this fix : 

Create a custom data sets of 'address' type and mark the fields as required.

CASE 1
While creating a new contact : 
 - Just enter first_name and last_name and try to save - current behavior is form throws 'required' form rule error for custom field.
 - After this fix, the contact will get saved, as the user intension was not to fill address.

CASE 2
Consider a contact having a address to it : 
 - Current behavior : Edit the contact, delete the address, and try saving contact, it will throw required form rule error for deleted address.
 - After this fix, upon following above steps no form rule error will raise.