Documentation for ModifiableContact
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/main/java/com/snyder/contacts/client/model/modifiable/ModifiableContact.java
	src/main/java/com/snyder/contacts/client/view/editcontact/EditContactView.java
	src/main/java/com/snyder/contacts/client/view/listing/ContactListingView.java
	src/main/java/com/snyder/contacts/client/viewmodel/MainViewModelImpl.java