Fix JS error on application creation page if no plugins configured

[alexmt]

No description provided.

[codecov]

Codecov Report

Merging #2432 into master will decrease coverage by 1.21%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2432      +/-   ##
==========================================
- Coverage   39.45%   38.23%   -1.22%     
==========================================
  Files         104      104              
  Lines       15119    14652     -467     
==========================================
- Hits         5965     5602     -363     
+ Misses       8389     8297      -92     
+ Partials      765      753      -12

Impacted Files	Coverage Δ
controller/appcontroller.go	44.15% <0%> (-6.47%)	⬇️
pkg/apis/application/v1alpha1/types.go	58.57% <0%> (-3.73%)	⬇️
controller/state.go	71.56% <0%> (-2.44%)	⬇️

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