Implement Add and Update Person and Address Methods
This merge request is linked to !2 (merged). It is a better version of the older merge.
Is related to the following US's: #9 (closed) #3 (closed) #4 (closed) #10 (closed) #11 (closed) #5 (closed) #6 (closed)
The issues above where closed through the commits of this merge. Closes #3 (closed) | Closes #4 (closed) | Closes #5 (closed) | Closes #6 (closed) | Closes #9 (closed) | Closes #10 (closed) | Closes #11 (closed)