Merge pull request #397 from SLaks/test-cleanup

Cleanup unit tests
Solution: Fixed spelling of LICENSE
Commands: Change PkgCmdIDList to enum
Commands: Rename command IDs to follow C# conventions

Remove cmd Hungarian notation
Use UpperCamelCase
Remove suffixes

This giant commit consists of nothing but rename refactorings.
I also removed a few unused enum members.
Commands: merge GUIDs & IDs files

Also rename class & enum