DRY v1

[mcascone]

Only the truly repetitive parts were dried. I didn't make new logic to put all extraction in one file, as it is clear there are specific paths the non-generic loaders need to take.

The local helpers.py file is imported as shown:

sys.path.append(os.path.dirname(os.path.realpath(__file__)))
from helpers import hello_from_script, log_directories, extract_text_from_all_pdfs

This assumes the helpers.py file is in the same dir as the consuming script.