getDisciplineId returns an empty string (i.e.: "") rather than null.
To avoid a NPE, getDefaultUser() now checks if a user is nul before attempting to return the default user's Id.  Also the implementation of newInstance now only sets the creator and owner when the default user is not null.
Updated the javaDocs for newInstance to reflect the API change
[StartUp]Issue127; updated API to reflect changes to newInstance.
[StartUp]Issue127; Updated newInstance such that if newInstance only sets the creatror and owner if there exists a defaultUser
[StartUp]Issue127; the new user's disciplineId is now set to an empty string rather than null
Merge pull request #203 from harleigh/userNotInDB

[StartUp] Creating/Loading users into MCT from the command line