• add json description files in datasets-info

• improve documentation (readme files) of datatasets in datasets-info, notably add description of fields!

• make an app from the concordancer script

• normalize the names of databases to clearly indicate the language

• update all scripts and apps to rely on datasetst-info/fetch_datasets.R rather than directly load

• write a fetcher in Python or make a script out of fetch_datasets.R

• improve the appearance of the openlexicon pages (nicer css, adda menu?), to make it more similar to lexique.org

• make www.openlexicon.fr DNS entry point to chrplr.github.io/openlexicon