accepted changed reference results from Annex60 models for easier work flow
fixed unit test files for BesTest
accepted initial versions of solutions for bestest
Merge branch 'Annex60' into issue127_UnitTestCoverage
changed reference results of BesTest according to bugfix in sky brightness calculation
Merge pull request #156 from open-ideas/issue127_UnitTestCoverage

Issue127 unit test coverage