Changeset 7060 for trunk/sources/MergeConfigs.cmd

#1653

• Changed config merging behavior to always merge from the original HeuristicLab app.config file in order to not break the local build when changes to the config files occur
• Added an interactive mode detection to the MergeConfigs.cmd to allow execution from the explorer
• Changed app.config in HeuristicLab.Tracing-3.3.csproj to not copy to output directory
• Changed app.config in HeuristicLab-3.3.csproj to always copy to output directory