Added crystal single electron data set reconstruction chain

- Added crystal single electron data set reconstruction chain
- Fixed a path to input hepmc file
- Added needs for crystal simulation
- Updated crystal scripts
- The emcal_electrons dataset is generated from scratch using the script datasets
- Uses the juggler install in /usr/local
- fixed hepmc file extension
- Using child pipeline for executing script
- Adding child pipeline script
- Making input sample smaller for debuggin
- Added gitlab dashs boarding for testing
	new file:   .gitlab/dashboards