Fix form alignment.

[jkmarx]

Resolves #2581

[codecov]

Codecov Report

Merging #2601 into develop will decrease coverage by 0.47%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           develop   #2601      +/-   ##
==========================================
- Coverage    53.47%     53%   -0.48%     
==========================================
  Files          406     406              
  Lines        26804   26420     -384     
  Branches      1240    1240              
==========================================
- Hits         14334   14004     -330     
+ Misses       12470   12416      -54

Impacted Files	Coverage Δ
refinery/core/admin.py	85.71% <0%> (-4.66%)	⬇️
refinery/core/models.py	71.45% <0%> (-3.14%)	⬇️

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