Changeset 16986 for branches/2924_DotNetCoreMigration/HeuristicLab

#2924:

• changed the use of AppDomain.CurrentDomain.BaseDirectory to Directory.GetCurrentDirectory() in projects HeuristicLab.MathJax and HeuristicLab.Problems.GeneticProgramming, this change helps to load these plugins correctly with the new PluginInfrastructure
• deleted obsolete files from folder HeuristicLab/3.3/Properties and added launchSettings.json for docker