2.1.0-b1

Bug fixes:

#745: Allow first and last name fields to be empty (#747)

Fixes #745

Fix advanced search issues (#748)

Gh 547 fix leaflet (#750)

fix what was recently broken in Leaflet version upgrade
fix gray tile artifacts when map loads at certain zoom levels

Framework improvements:

Get rid of unused or useless derived state (#749)

Dependencies upgrades

Bump jest from 23.4.0 to 23.4.1 in /client (#742)

Bump webpack from 4.15.1 to 4.16.1 in /client (#744)

Bump leaflet from 1.3.1 to 1.3.2 in /client (#743)