Fix bugs before master merge
- vtkConfigurationManagerExcel not saved
- recreate AddIns and test with new addIn
- Before Save handler now exit silently in case of an error
- Install new AddIn for tests
- VBAToolKit_DEV completely recreated from XML, then Unit Tests
- Cancel VBAToolKit_DEV version management
- add a .gitignore file in Project folder for ignoring Excel files
- update gitExclude file generated at project creation
429 Unit Tests, no failure, in 147,88 seconds