changed some UI features

Run display menu #4 the output needs to be fixed
cin.ignore() needs to be used. also number 40 that keeps appearing when
the flight is being described needs to be fixed.
unhandled exception for deleting a passenger.
Entering a name of the passenger still does not work
changed some ui features

see my previous comment to see what needs to be fixed. If any of you
feel like it try to break my UI and tell me so i can fix it
Merge pull request #34 from collinday/UI

UI updates