Handle locale in .uischema.

[chrimc62]

Kind names and locale are ambiguous, so check in merged .schema to resolve.
Add check for missing $schema.

[codecov-commenter]

Codecov Report

Merging #909 into master will increase coverage by 0.86%.
The diff coverage is 84.00%.

@@            Coverage Diff             @@
##           master     #909      +/-   ##
==========================================
+ Coverage   55.64%   56.51%   +0.86%     
==========================================
  Files         220      220              
  Lines       16179    16582     +403     
  Branches     2308     2309       +1     
==========================================
+ Hits         9003     9371     +368     
- Misses       6608     6645      +37     
+ Partials      568      566       -2     

Impacted Files	Coverage Δ
packages/dialog/src/commands/dialog/merge.ts	0.00% <0.00%> (ø)
packages/dialog/src/library/schemaMerger.ts	79.29% <85.71%> (-0.11%)	⬇️
...mathematics/confusion_matrix/AppConfusionMatrix.ts	6.66% <0.00%> (-22.32%)	⬇️
packages/lu/src/utils/textfilereader.ts	28.57% <0.00%> (-15.43%)	⬇️
packages/lu/src/parser/lu/lu.js	91.66% <0.00%> (-8.34%)	⬇️
packages/lu/src/parser/lu/qna.js	83.33% <0.00%> (-6.67%)	⬇️
packages/lu/src/parser/lufile/newEntitySection.js	92.45% <0.00%> (-3.11%)	⬇️
packages/lu/src/parser/cross-train/crossTrainer.js	92.43% <0.00%> (-2.78%)	⬇️
packages/lu/src/parser/qna/qnamaker/kbCollate.js	90.65% <0.00%> (-2.35%)	⬇️
packages/lu/src/parser/lu/luMerger.js	76.34% <0.00%> (-1.40%)	⬇️
... and 58 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 52d4917...f179195. Read the comment docs.