Allow for passing in geo_shape geoJSON when creating a group

[tibetsprague]

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[codecov]

Codecov Report

Merging #847 (ccdcaf4) into dev (a061a15) will decrease coverage by 0.01%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##              dev     #847      +/-   ##
==========================================
- Coverage   57.15%   57.14%   -0.02%     
==========================================
  Files         211      211              
  Lines        5884     5887       +3     
==========================================
+ Hits         3363     3364       +1     
- Misses       2521     2523       +2     

Impacted Files	Coverage Δ
api/models/Group.js	49.24% <50.00%> (-0.19%)	⬇️

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[thomasgwatson]

So, unfortunately, geomFromGeoJSON in postgis only accepts a single geoJSON geometry, not a feature collection. I think this was part of what was bogging us down in the prior attempt to get this sorted.

We could check if the incoming geoJSON is a feature collection, and then port it to a wkt encoded 'geometry collection', which can then be inserted into the geo_shape row via ST_AsText.

We will also need to validate that the same geometries are being served out as valid geoJSON. Perhaps helper functions for these sorts of operations were already built out when Sophia did the group geometry stuff?