initial commit of ContactImpl: simple implementation of the interface -
using a static variable nextAvailableId to control assignment of IDs to
contacts. Will need to add some method that updates this variable on
startup to account for previously created contacts.
unimportant commit - simply tidied up some comments
initial commit of MeetingImpl: simple implementation of the given Meeting
interface. Uses static int nextAvailableId similar to ContactImpl - also
will need additional functionality to update nextAvailableId upon startup.
added JavaDoc comments for constructor
added @Override annotations to public methods implemented from the
interface, for completeness and safety