Fixed test case "CanCollapseNodesAndGetSameResult"
Fixed test case "GitHub_461_DeleteNodesFromCustomNodeWorkspaceAfterCollapse"
Merge branch 'ChocoButter-2Become1' into TestCaseFixes
Merge pull request #1255 from Benglin/TestCaseFixes

Merging this in so that we can get more up-to-date status of all failing test cases.