adding loading image during results fetch

[anthonygarvan]

Thanks for the headstart @noahmanger , this was quick.

[codecov-io]

Codecov Report

Merging #2021 into develop will decrease coverage by 0.02%. The diff coverage is 38.88%.

@@             Coverage Diff             @@
##           develop    #2021      +/-   ##
===========================================
- Coverage    55.35%   55.33%   -0.03%     
===========================================
  Files           48       48              
  Lines         3268     3273       +5     
  Branches       383      384       +1     
===========================================
+ Hits          1809     1811       +2     
- Misses        1443     1446       +3     
  Partials        16       16

Impacted Files	Coverage Δ
static/js/legal/SearchResults.js	32.14% <30.76%> (+1.37%)	:arrow_up:
static/js/legal/LegalSearch.js	83.92% <60%> (-2.87%)	:arrow_down:

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[noahmanger]

Nice work!