#98 refactor: enable all CPUs for msbuild (with nodereuse false)
#98 refactor: log msbuild at detailed level to files in /artifacts/logs
#98 refactor: turn down msbuild verbosity to minimum
#98 refactor: turn down nuget verbosity to quiet (overridable by ENV var)
#98 refactor: made msbuild file verbosity overridable by ENV var
#98 refactor: change test result output to /artifacts/tests
Merge pull request #105 from adamralph/98

#98 Build script improvements