Fix bug on finding reference resource while deleting

[sudhirverma]

No description provided.

[lstocchi]

By looking at the code it looks good now. Added some ideas to improve it.

[codecov-io]

Codecov Report

Merging #542 (6d6e94a) into master (9972c85) will decrease coverage by 0.03%.
The diff coverage is 85.71%.

@@            Coverage Diff             @@
##           master     #542      +/-   ##
==========================================
- Coverage   68.28%   68.25%   -0.04%     
==========================================
  Files          96       96              
  Lines        5774     5781       +7     
  Branches     1002     1003       +1     
==========================================
+ Hits         3943     3946       +3     
- Misses       1831     1835       +4     

Impacted Files	Coverage Δ
src/commands/delete.ts	39.80% <62.50%> (ø)
src/cli-command.ts	67.14% <100.00%> (+0.32%)	⬆️
src/util/check-ref-resource.ts	95.00% <100.00%> (ø)
src/hub/task-page-view.ts	19.64% <0.00%> (+0.01%)	⬆️

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[lstocchi]

Tested and works fine. Some more comments/ideas below that came to my mind by looking at the code. But it works the same as it is.