Linking phase matches from the same dataset

[doku]

During Linking phase, matches and comparison is done on the rows from the same dataset.

** To Reproduce **

1. Run findTrainingData, label, train, and link phase.
2. During label phase, rows from the same dataset is displayed for labeling.
3. The resulting output have matching pairs with the same z_source.

** Expected behavior **
I'm expecting during labeling phase to only show rows from different z_source. And I'm expecting output to also only have pairs with different z_source.

[sonalgoyal]

Thanks for reporting this issue Jason @doku. We purposely keep the training data and labeling like this so that it can find samples better. Can you please let me know why this is a concern for you? Is it not showing enough pairs across the sources?

I have fixed the issue for linking. Can you please take the latest code and tell me if this is working fine for you?

[sonalgoyal]

fixed through #54