[4483] Safely lowercase strings for case insensitive comparison

[michaelrogers]

Closes #4483

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• Changes address original issue?
• Unit tests included and/or updated with changes?
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[codecov]

Codecov Report

Merging #4499 (eada009) into master (159563c) will increase coverage by 0.47%.
The diff coverage is 0.00%.

❗ Current head eada009 differs from pull request most recent head 87dd8e4. Consider uploading reports for the commit 87dd8e4 to get more accurate results

@@            Coverage Diff             @@
##           master    #4499      +/-   ##
==========================================
+ Coverage   69.36%   69.83%   +0.47%     
==========================================
  Files         994     1019      +25     
  Lines       35806    36813    +1007     
  Branches     1629     1589      -40     
==========================================
+ Hits        24838    25710     +872     
- Misses      10564    10697     +133     
- Partials      404      406       +2     

Impacted Files	Coverage Δ
src/ui/layout/mct-tree.vue	12.88% <0.00%> (ø)
src/plugins/move/MoveAction.js	30.64% <0.00%> (-23.09%)	⬇️
src/plugins/myItems/pluginSpec.js	96.77% <0.00%> (-3.23%)	⬇️
src/ui/layout/CreateButton.vue	25.00% <0.00%> (-3.00%)	⬇️
src/ui/router/ApplicationRouter.js	85.26% <0.00%> (-1.06%)	⬇️
src/MCT.js	95.96% <0.00%> (-0.13%)	⬇️
src/plugins/duplicate/DuplicateTask.js	97.64% <0.00%> (-0.11%)	⬇️
src/api/api.js	100.00% <0.00%> (ø)
src/plugins/plugins.js	89.70% <0.00%> (ø)
src/plugins/plan/plugin.js	100.00% <0.00%> (ø)
... and 105 more

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[michaelrogers]

@davetsay - The external lowercasing function + string casting was removed in favor of lowercasing inline. Let me know if any further changes are needed before merging.

[davetsay]

LGTM

Reviewer Checklist

Changes appear to address issue?	Y
Appropriate unit tests included?	N/A
Code style and in-line documentation are appropriate?	Y
Commit messages meet standards?	Y
Has associated issue been labelled unverified?	Y