Sync patient data from user to server about simple-android

[saket]

Not relevant for MVP. We'll still keep the status field in the code. We'll default to "active" status. @saket please default to "active" status on the device as well.

Got it.

[ssrihari]

Is the patient <=> phone_number relationship many-to-many? In that case, are we sure we want to update other patients' phone numbers when one patient's shared phone number is updated?

If not, it's a one-to-many relationship.

@timcheadle @saket @govindkrjoshi

[ssrihari]

We need to store age, and age_updated_at, to compute the current age.