Retrieve newJO sequencers in HLTMenu
Retrieve information about sequencers for newJO in HLTMenuJSON. The reco sequencers are in a different places in the tree, so we have to retrieve them in a different way.
Also, update the regex for finding steps: now it is adapted for names with small letter (e.g. "step1") or names in the middle of the sequencer's name (e.g. "merged_Step1").
Fixes the bug of missing steps in HLT Summary printout.
Tagging @tbold