Update Film.cpp

Added checkVector() method to verify Film object doesn't already exist
Update Film.h

added checkVector() method.
Update FilmScanner.cpp

Adds all films from the dataset to a <Film*> vector array.
Currently fails when adding a film to a User's liked array. Fixing that tomorrow morning.
Update Person.cpp
Update Person.h
Update User.cpp
Update User.h
Update FilmScanner.cpp

Everything with the exception of the recommendation algo seems to be working...
Update Person.cpp
Update Person.cpp
Update FilmScanner.cpp
Update User.cpp
Merging Karl's commit