[FeatureRequest] Re-count number of events in MiniAODv2 background, signal, and data

[reimersa]

Current situation and requested solution

Update number of events in MiniAODv2 tuples

To be done after

• Re-tuplize tuples using MiniAODv2 and extended content #18

To be done before

• before running an analysis with new tuples

Steps

• After tuplizing, count events and make new xml files.
• Update number of events in database