Update main L1Calo_Phase1 monitoring script and add a test for it
The script we are using hasn't been updated for a while, so this is a push of the latest version that is working both online and offline at the moment. I've also added a short test for it so we can get some early warning of some things that may break it (not a comprehensive test though).
Closes ATR-28908.
Edited by Frank Winklmeier