Emissions reporting doesn't work for custom meters

[eringold]

An invalid output variable or meter name will cause a Meter:Custom to not be reported. One of these end-uses is not valid for every simulation, so no energy or emissions for TotalHVAC or CoolingHVAC meters are ever reported.

[eringold]

Also the new_col_name in comstock_column_definitions is swapped here:

ComStock/postprocessing/comstockpostproc/resources/comstock_column_definitions.csv

Lines 912 to 913 in b4671de

	results.csv,emissions_reporting.annual_total_hvac_natural_gas_ghg_emissions_kg,out.emissions.natural_gas.heating,TRUE,FALSE,float,co2e_kg,co2e_kg,annual greenhouse gas emissions from electricity for the hvac_natural_gas_ghg_emissions
	results.csv,emissions_reporting.annual_heating_natural_gas_ghg_emissions_kg,out.emissions.natural_gas.enduse_group.hvac,TRUE,FALSE,float,co2e_kg,co2e_kg,annual greenhouse gas emissions from electricity for the heating_natural_gas_ghg_emissions

[eringold]

This was caused by a change in EnergyPlus, which is fixed in NREL/EnergyPlus#10773