Mccalluc/merge facets

[mccalluc]

Fix #2069. I do not have an exact reproducer on my screen, but I believe I understand the mechanism, and this PR addresses it.

[codecov-io]

Codecov Report

Merging #2073 into develop will increase coverage by 0.12%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           develop   #2073      +/-   ##
==========================================
+ Coverage    44.28%   44.4%   +0.12%     
==========================================
  Files          417     417              
  Lines        27771   27855      +84     
  Branches      1346    1353       +7     
==========================================
+ Hits         12298   12369      +71     
- Misses       15473   15486      +13

Impacted Files	Coverage Δ
...ui/source/js/user-file-browser/services/factory.js	91.04% <100%> (+53.54%)	⬆️
refinery/user_files_manager/views.py	87.27% <0%> (-10.29%)	⬇️
...le-browser/ctrls/user-file-browser-filters-ctrl.js	8.21% <0%> (-0.71%)	⬇️
...file-browser/ctrls/user-file-browser-files-ctrl.js	10.63% <0%> (-0.48%)	⬇️
refinery/user_files_manager/tests.py	100% <0%> (ø)	⬆️

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