Did some code cleanup.

We don't need
- location = join(gen_location, file_location)
- about_file_location =''
- if location.lower().endswith('.about'):
- about_file_location = location
- else:
- if location[-1] == '/':
- about_file_location = location.rpartition('/')[0] + '.ABOUT'
- else:
- about_file_location = location + '.ABOUT'

as we are now using line['about_file']