fixes

Replace spaces with '+'
Removes 'de', 'den', 'det', 'et', 'en' from beginning of title for
better match
Use 'titlestartswith' instead of 'titlecontains' for better match.
Calculates score from 'LevenshteinDistance' and offset between year in
media and year from DFI (if year in media)
Limits search to +/- 5 years from year in media, if year is present.
Only look for images if the DFI JSON isn't None and is present.