Replacement of MenuChains.py in TMMT
MR to replace the dictionary and function contained in MenuChains.py in TMMT.
Current approach is to save the list of all chainDicts (to not have to re-generate them) and make them available to the TriggerConfigHLT class in which the function getConfFromChainName is located. This function returns a list of chainPartNames.
In several places "temporary" code had to be put in place which can hopefully get removed once the development moves to fully using the trigger menu package.
Associated jira: ATR-17934