Don't ask question if return is NONE

[jvfe]

• Wikidata Curation Tools version: 0.0.1
• Python version: 3.10
• Operating System: Manjaro Linux

Description

When the wikidata API lookup returns an object with NONE as values, it still asks the question:

Is the QID for 'Bachelor's Degree in Genetics'  
 NONE - NONE (NONE) ? (y/n)

This doesn't make sense. It should instead jump directly to:

What is the QID for: 'Bachelor's Degree in Genetics' ?

Maybe make the wikidata lookup return an error if the JSON received from the API is empty and make add_key handle that error with a try/except -> If error is received ask "what is the qid".