Update to latest Duality and FSharp compiler plugin
Check severity of errors in Fs compiler, only report errors
Use hashset for fsharp compiler references to ensure one dll with the same name
Merge branch 'master' of https://github.com/BraveSirAndrew/DualityScripting into hash-set

Conflicts:
	CorePlugin.Test.CSharp/ScriptComponentTests.cs
	CorePlugin.Tests/ScripCompilerTests.fs
	CorePlugin.Tests/packages.config
	CorePlugin/FSharpScriptCompiler.cs
Removed post build event, not useful in this project
Allow the scripting resource to assemblies from Scripts directory when necessary (sometimes more than one)
Better error messages
I was being a little overzealous with the comparision