Changeset 17331 for branches/3026_IntegrationIntoSymSpace/HeuristicLab.JsonInterface.OptimizerIntegration/MenuItems/ImportJsonTemplateMenuItem.cs

#3026

• added new project: HeuristicLab.JsonInterface.OptimizerIntegration -> to generate/load .json templates in HeuristicLab.Optimizer
• added new menu dropdown items (Import/Export) in HeuristicLab.Optimizer -> they are only active when they have items
• added item for Import/Export menu items (Json-Template), logic in file FileManager.cs in project HeuristicLab.JsonInterface.OptimizerIntegration
• repositioned CloseMenuItem, CloseAllMenuItem and added new seperator in menu File (to separate import/export from save/open and close/closeAll)