AddVolunteer broken down into several subroutines.
Add printlist subroutine to Phase 2.
Fixed preamble for add volunteers.
Add oldVolunteer and confirmVolunteer methods.
Comments for phase2
Fixed confirmVolunteer method.
glitch on insertion of old volunteer
commit before merge
post-merge
testing oldVolunteer method.
Add try/except to oldVolunteer.
Cover try/except in showVolunteerList
Add rollback to old_volunteer
Remove try/except from showVolunteerList
Clean up oldVolunteer
Cleaned up addVolunteer method.
Add join to display volunteer names to user via showVolunteerList