Edited main to get UI working

switched around loops and UI declaration. Added a getline to check for empty lines. Removed User vector
added call to advanceDate and display date

current date is displayed in menu header.
fix a few hiccups in checkin/checkout/showOverdue
added a couple needed setters
updated some of main.cpp
Fixed menu handling and screen clearing
modified a bit in main.cpp again.
	- added initial output formatting
	- added a way to read in the userlist.
main.cpp is mostly done now.
	-finished file output for books
	-finished file output for users
	-closed both book and users files
	-removed a few comments that were redundant.
main.cpp updates
	-removed getline() from both loops for input. it was causing us to skip a line on the input
	-tested writefiles, appears to work.
	-starting to createa list of bugs.
Update List.h
Update List.h
added userlist.txt with actual users in it.
fixed a small syntax error in main.cpp with the declaration of the user vector.
fixed user input
added userlist.txt
Merge branch 'master' of https://github.com/vinceashman/libraryManager
just doing what git says to
Merge branch 'master' into SomewhatWorking

Conflicts:
	List.h
	UserInterface.h
	main.cpp