Updated Interface

- Main Menu options 2, 3, 4, and 5 completed
- Main Menu option 1 (“Edit Contacts List”) almost completed
    - “Add New Contact” takes first and last name strings
    - it also takes a string for the phone number in the pair map
instead of trying to convert it to an int
Implemented clear screen with system call

Instead of printing N lines to clear screen, it just does it with a
system call: system(“clear”);
- Is portable across all POSIX systems (tested on ugrad machines also),
but unsure about functionality on windows machines
No conflicts

Conflicts:
	BasicMenuSystemTest.cpp
	Contacts.cpp
	Contacts.h