Fix bug myopic co2

[lisazeyen]

This PR should fix three bugs

1. the option to limit the CO2 emissions by e.g. cb40ex0 as a sector_opts was not working anymore due to changes in the build_energy_totals.py script
2. by changing the grouping_years in this PR here fix grouping years list issue caused by newer powerplant database #240 to [1980, 1985, 1990, 1995, 2000, 2005, 2010, 2015, 2020, 2025, 2030] two issues arise in the add_existing_baseyear.py script:

• components with same names where added to the network (e.g. for planning horizon 2020 existing infrastructure for solar was added with the same name as the extendable assets for this planning horizon)
• the existing heating infrastructure data is not taken from the powerplant matching and should be therefore evenly distributed over the last 25 years (old grouping_years, not including future years 2025 and 2030)

3. fixes in plot_summary for myopic code and also removing update_config_with_sector_opts introduced in option to specify any config through sector opts with CF:<label>:<value> #251 since sector opts is not a wildcard for this rule

[lisazeyen]

@energyLS

[fneum]

Thanks for taking care of this. Just some polishing:

[lisazeyen]

Let's wait with merging until @Irieo and I had a look at the biomass CHPs