Also fixes 'issue date' in plots.

removing the need for a spatial points file in met_extractor assets to check the output dimensions, now compared to the input nc that created the results

removing processor_scraper.py, media scraper now lives in its own gitlab repo https://gitlab.developers.cam.ac.uk/gilligan-epid/wheat-rusts/media-scraper

This is handles by ews-epidemiology's model.py

rempoving project_handler from logging - not useful as multiple runs all compete and become collated with one another

making processor components pass their shortname in - rather than relying on the short_name map to know about all components