Scottx611x/fix visualization launches

[scottx611x]

Fixes #2774

[codecov]

Codecov Report

Merging #2775 into release-1.6.4 will decrease coverage by 2.32%.
The diff coverage is 100%.

@@                Coverage Diff                @@
##           release-1.6.4    #2775      +/-   ##
=================================================
- Coverage           58.9%   56.58%   -2.33%     
=================================================
  Files                414      414              
  Lines              28047    25783    -2264     
  Branches            1253     1253              
=================================================
- Hits               16522    14589    -1933     
+ Misses             11525    11194     -331

Impacted Files	Coverage Δ
refinery/data_set_manager/tests.py	99.88% <100%> (-0.04%)	⬇️
refinery/tool_manager/models.py	96.97% <100%> (-0.89%)	⬇️
refinery/data_set_manager/utils.py	76.21% <100%> (-1.09%)	⬇️
refinery/core/models.py	72.91% <0%> (-4.7%)	⬇️
...ource/js/dashboard/controllers/dataset-deletion.js	13.88% <0%> (-3.76%)	⬇️
refinery/core/api.py	40.51% <0%> (-3.3%)	⬇️
refinery/data_set_manager/views.py	44.42% <0%> (-2.5%)	⬇️
refinery/core/tests.py	99.56% <0%> (-0.18%)	⬇️
... and 2 more

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