Output corresponding duplicate cluster

[ajdapretnar]

Issue

Fixes #378.

Description of changes

Detect Duplicates now outputs correct documents with Duplicate Cluster output.

Includes

• Code changes
• Tests
• Documentation

[robertcv]

Looks good, could you just add a new line on the end of the test.

[ajdapretnar]

We discussed with @lanzagar to solve this in a nicer way. int(cluster[1:]) is really not all that elegant and not very future-proof. I need to figure out how to retrieve just the cluster number and not cast strings to ints. Suggestions welcome. I honestly think this widget should be re-done in parts as some instances are duplicated. I would be nice if we can work with a simple dict and use it for everything.

[codecov-io]

Codecov Report

Merging #379 into master will decrease coverage by 0.35%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #379      +/-   ##
==========================================
- Coverage   85.44%   85.08%   -0.36%     
==========================================
  Files          34       34              
  Lines        1951     1951              
  Branches      344      344              
==========================================
- Hits         1667     1660       -7     
- Misses        243      247       +4     
- Partials       41       44       +3

[codecov-io]

Codecov Report

Merging #379 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #379   +/-   ##
=======================================
  Coverage   85.21%   85.21%           
=======================================
  Files          34       34           
  Lines        1962     1962           
  Branches      344      344           
=======================================
  Hits         1672     1672           
  Misses        250      250           
  Partials       40       40

[ajdapretnar]

@robertcv this is ready for another review and potential merge.

[robertcv]

I produced an error by deselecting the selected cluster in Duplicate Cluster widget. This needs to be handled before I merge.

[ajdapretnar]

Fixed. I also added a test to prevent future errors. :) 💪