improve encapsulation of VehicleIndexRowButtonActionHolder;
implement changes made to VehicleIndexRowButtonActionHolder;
add java documents for VehicleIndexRowButtonActionHolder;
add OnClickListener for Save and Review buttons on VehicleAdapter;
update onResume() and onRefresh() methods, and then enable the "swipe to reload" feature;
rename R.string.AuthFragment_Profile to R.string.SIGN_IN;
add and implement R.string.REFRESH;