Write taxon IDs to imported/exceptions files

[rjchallis]

Storing a list of taxon_id/scientific_name matches alongside spellchecked or imported taxa will help speed up importing of updated files by creating lists that can be placed in a names directory to remove the need for taxon_id lookups.

[rjchallis]

exceptions spellcheck files now have 4 columns (plus extra columns to the right if multiple suggestions are found for a taxon):

exceptions/example.spellcheck.tsv

taxon_id	input	rank	suggested
190659	Actitis macularius	species	Actitis macularia
297805	Chlidonias hybrida	species	Chlidonias hybridus
54026	Thalassarche melanophris	species	Thalassarche melanophrys
216219	Sylvia ruppeli	species	Sylvia rueppelli

imported taxon ID files have 3 columns:

imported/example.taxon_ids.tsv

taxon_id	input	rank
100830	Tetrao urogallus	species
1233216	Lyrurus tetrix	species
64668	Lagopus muta	species
52650	Lagopus lagopus	species

These files do not contain rank information so name collisions in the taxon_ids file are automatically commented out.

These files can be copied and pasted into a names subdirectory with the same name as the original input file to allow them to be used as taxon_id lookup tables. Commented rows will be ignored.

names/example.tsv

taxon_id	input	rank	suggested
190659	Actitis macularius	species	Actitis macularia
297805	Chlidonias hybrida	species	Chlidonias hybridus
54026	Thalassarche melanophris	species	Thalassarche melanophrys
216219	Sylvia ruppeli	species	Sylvia rueppelli
100830	Tetrao urogallus	species
1233216	Lyrurus tetrix	species
64668	Lagopus muta	species
52650	Lagopus lagopus	species