Adapt GREL script (+ guide) to take heed of novel taxa's inferred rank

[FedorSteeman]

Issue

Context: We need to infer taxon rank ID from the name structure because it isn't available from any other field.

Solution

The post-processing script should take heed of how the app currently infers the rank of novel taxa based on the following logic:

elementCount = len(taxonNameEntry.strip().split(' '))
subgenusCount = 0
if '(' in taxonNameEntry: subgenusCount = 1

if ' var. ' in taxonNameEntry: rankid = 240
elif ' subvar.  ' in taxonNameEntry: rankid = 250
elif ' f. ' in taxonNameEntry: rankid = 260 
elif ' subf. ' in taxonNameEntry: rankid = 270 
elif elementCount == 3 + subgenusCount: rankid = 230
elif elementCount == 2 + subgenusCount: rankid = 220
elif elementCount == 1 + subgenusCount: rankid = 180

The guide should also be updated to make sure that digitizers adhere to this format:

• Genus (Subgenus) species (' var. '/' subvar. '/' f. '/' subf. ')

Tasks:

• [x] Adapt GREL script to take heed of above rank inference
• [x] Adapt guide to make digitizers adhere to fixed format

Acceptable solution

Solution has been implemented in https://github.com/NHMDenmark/Mass-Digitizer/blob/main/OpenRefine/post_processing.json

[jlegind]

Other GREL issue: #411