Added neighbor usage for HT and MHT

Implemented two cuts on region energies implemented to select regions to include in HT and MHT. The first threshold checks that the regions are above a high threshold (default 7 GeV), and the second threshold checks that selected regions have at least energy over a second threshold (default 3 GeV), if they have a neighbor that has at least 7 GeV.  This way jets that went on border of two regions ave their leakage added while not counting noise and pileup.  To be tested :(