Relationships support in OpenSRP

[maimoonak]

Add openmrs relationships handling in opensrp connector module.

This way module should allow for pushing relationships data to openmrs and to allow maintaining relationship on opensrp end as well.

[cafootitt]

@maimoonak I have written this up in the data mapping protocol. Can you please review the section on person_relationship mapping and verify it's accurate?

Here's the link. See page 30.

[maimoonak]

@cagulas Thanks a lot for sharing this. This is what we were discussing today. The document looks perfect.

[cafootitt]

Ok, great. Thanks for reviewing.

[shakjaf110]

Commited code pushing person relationships data to openmrs and to allow maintaining relationship on opensrp end as well. @maimoonak @cagulas