Merge pull request #2730 from pboyer/PMIcons

Icons in PublishPackageView, SampleData and small modifications to PublishPackageViewModel
Merge pull request #2702 from pboyer/PMUIFix

MAGN-5022: Make DynamoViewModel a property in WorkspaceViewModel
Synced LibG DLLs to latest. Fixes MAGN-4796, 4818, 4856, 4817
Merge branch 'master' into Revit2015