Started waitStaff functionality.  Complete payment, close table, and table alerts are mostly finished.
added some comments
Implemented the login system.  Removed page links from header, because the system will now not allow going to a different screen than you are logged in as.  Added user information to the $_SESSION array when user is logged it.  This info can be used on the different pages.
Fixed a bug in authorize.php with failed to authorize Table accounts due to a naming convention issue in the database.  A workaround is in place.
Delete dataSources.xml
Delete workspace.xml
Merge pull request #15 from mdt0093/login
Merge pull request #16 from mdt0093/edit-menu

create editMenu
Merge pull request #17 from mdt0093/wait-staff

Wait staff
Merge pull request #20 from mdt0093/master

Pulling master into edit menu