Annotate papers with source organism

[blakesweeney]

We can mark all papers by what organism the paper is about. This will be key to integrating this into miRBase as they use this in their current approach (https://academic.oup.com/nar/article/47/D1/D155/5179337?login=false). This is needed because some miRNA names are not specific to a species. This means simple text mining may well match something from a different species than the intended species. To get around this they use the organism database (https://organisms.jensenlab.org/Search) which contains a mapping of taxid -> paper. We should import and annotate this. This would then be provided as a facet in the widget as well.

[carlosribas]

I started this task and at least for now I am loading the data from the csv file into a table in the database (litscan_load_organism). That done, for the articles that LitScan found that have pmid, I check which organisms were annotated. The results are saved in the litscan_organism table.

I'm going to review this process and think about the best way to automate it, but I imagine it will be something similar to what we already do with the rest of the RNAcentral data.