NEII - May 2021 release

[AnaBelgun]

• SOS layers fail: #168

• NEMSR feature info templates not working #167

• dot points for CSV data are too big compare to v7 version: #166

• Victorian soil WMS too big: #165

• radio buttons - TerriaJS/terriajs#5037

• ideal zoom - TerriaJS/terriajs#5047

• SOS catalogue item - TerriaJS/terriajs#5045

• support opacity slider TerriaJS/terriajs#5044

[AnaBelgun]

superseded by June release