MPS-19777 The Windows distribution does not use the bundled help
Merge branch '3.1/rcp' into MPS3.1
Fix MPS-19750 Action 'Convert Java to MPS' moves the class from the package to the same level with the package
Fix MPS-19770 Action 'Convert Java to Mps' deletes class members
Regeneration was required after rebase
Better process erase generics for raw classes, avoid empty joins/arrays, MPS-19765
MPS-19783 CheckReferences error in closures.sandbox
Made bl
Merge remote-tracking branch 'origin/MPS3.1'