Merge pull request #2 from ikrav/egm_electron_id_development

egm electron id development
fix bad initialization bug, add in protections against zero-sized cutflows
Merged common_isolation_selection_70X from repository lgray
Moved global configs out of this file, they should be in the top level python script
Updated cut values to have more sig. digits and md5 sums too
My own package for electron ID validation, with a simple analyzer
The V0 version of the CSA14 Scenario 2 electorn cut-based ID working points
Moved Giovanni's V0 50ns cuts to Identification/, added all 25ns cuts to the ID sequence