Committing Workbench
Updating Test Game 4 & Checkstyle update
Java coding standards changes
Updating Test Game 4
general fixes in Test case 1, 2, 3
Test case changes - 3
Test case 2 - changes

As images in specified in test case 2 specification cannot be found,
other existing images are used for this test case.
Workbench update
Copying missing images
Revert "Test case 2 - changes"

This reverts commit 900dec09a6a19a55df0c33f820a66c418a9fbcf2.
Added trophies and certificates
Game engine dev - added a null check
Conversion of remaining XML Repo files to the new specification.
Merge branch 'localBranchSean'
Moved WizardTab ui class to a separate package. Moved SimSysGamePlatform and the wizard to a new package, edu.utdallas.simsysmain.
Workbench test commit
Merge branch 'master' into localBranchKG