Reducing the number of scripts for running reco chains

[mchiusi]

At the moment in the scripts folder there are the following files:

• run_default_chain.py
• run_new_chain.py
• run_meta.py
• run_radii_chain.py
• run_cluster_size.py

I plan to reduce this number of files, keeping only the first three from the list. Indeed, for instance, run_radii_chain.py script sequentially calls default and new chain, thus resulting in an unusual code-repetition.

This work will involve merging run_radii_chain and run_cluster_size scripts into run_default_chain and run_new_chain. It's not a trivial task because the current code in these latter scripts doesn't allow running the clustering step multiple times with different clustering parameters. We will have to open a new PR to address these changes.

Additional context

• After making these modifications, we should also test all the chains independently and through the webApp.
• I have identified an issue in the code I merged in PR New reconstruction chain in the webApp #47 when running pions. Indeed it may happens that the CS is not found for pions, resulting in an incomplete .hdf5 file and thus a webApp error. I have already solved this problem in my own fork and we can merge it here soon. The new working version of the application has been deployed online.
  I would suggest to make a unique PR, since the modification to solve the issue above already involved run_radii_chain.py script

If you have any suggestions please write them here or we can discuss them in person next week when I'll back at LLR.