Added a Test class for the PastMeetingImpl class to test the getNotes
procedure
Added a list of TODO statements to easily see what code is left to write
Renamed the PastMeetingTest file as it was incorrectly named and replaced
it with the correctly named file
Created a test class for the FutureMeeting class that tests the contructor
is working
Added code to addNewContact and modified the getFutureMeeting procedure to
ensure a null value is returned if it is not a future meeting
Added tests to ContactManagerTest to test the addNewContact procedure
including the Exceptions
Added the tests for GetMeeting and GetFutureMeeting
Added the code to return contacts by a list of IDs
Added the code to getContacts by name
Changed the getContacts procedures to ensure the return Set is not null as
this was causing an error
Added the tests for the getContacts procedures