Update sample library UI.
Do not use the Dynamo property sheet.
Copy references into local extern and link.
Merge remote-tracking branch 'origin/master' into MAGN-5245

Conflicts:
	src/Libraries/SampleLibraryUI/Properties/AssemblyInfo.cs
	src/Libraries/SampleLibraryUI/SampleLibraryUI.csproj
	src/Libraries/Samples/SamplesLibraryUI/Properties/AssemblyInfo.cs
	src/Libraries/Samples/SamplesLibraryUI/SamplesLibraryUI.csproj
	src/Libraries/Samples/SamplesLibraryUI/TomDickHarry.cs
	src/Libraries/SamplesLibraryUI/Properties/AssemblyInfo.cs
	src/Libraries/SamplesLibraryUI/SamplesLibraryUI.csproj
Remove prebuild copies.
Repoint output paths.
Fix copy locals.
Add attribute comments.
Comment on the DelegateCommand object.
Tiny tweak.
Separate NuGet package.
Warning about throwing nulls during AST build.
Merge pull request #3000 from DynamoDS/MAGN-5245

MAGN-5245 Create UI example node.
Merge remote-tracking branch 'origin/master' into Revit2015