Add visualizations in search results

[thammegowda]

Task 1: add map view

1. https://github.com/glottolog/glottolog
   this repo has language information. The one we are interested most is Geo coordinates (latitude,langitude)
   -- for example, https://github.com/glottolog/glottolog/blob/master/languoids/tree/drav1251/sout3133/sout3138/tami1291/bada1263/kann1259/kann1255/nucl1305/md.ini

2. We need to create geo-coordinates for all languages in our list
   https://github.com/thammegowda/mtdata/blob/master/iso-langs/bcp/iso639_3.tsv

3. Add map view into the search interface
   ** https://github.com/thammegowda/mtdata/blob/master/docs/search.html
   ** Related: D3Js and Plotly.js https://plotly.com/javascript/scattermapbox/

Task 2: histograms

Add histograms based on (a) languages, (2) groups (3) name

---

Edit: here is current version https://gowda.ai/mtdata/search.html