fix #1382 making adding Monaco siteextension robust
Add .editorconfig file
Update .gitignore file
Remove useless xml doc
Make GitExeRepository.Resolve() private
Add reference to LibGit2Sharp
Make GitExeRepository.CurrentId delegate to LibGit2Sharp
Make build.cmd independent of current working directory
Make build.[cmd|proj] cope with VS2013 msbuild path changes
Make GitExeRepository.Initialize() delegate to LibGit2Sharp