[PX] UI changes to "View/manage extractors"

[aphilop]

The following discussed and agreed changes need to be made to the already implemented UIs of viewing and managing the list of created extractors.

• The extractors table has only 4 columns: SOURCE TEMPLATE, TAGRET TEMPLATE, ENTITIES, and the one where the relevant action (View) is displayed
• The ENTITIES column displays the total number of entities from the source template and if available also the number of new entities that are still unprocessed from this total.
• We do not provide in this view any kind of feedback regarding the status of any extractor
• When deleting an extractor, we provide a relevant message to confirm that only the extractor will be deleted and not any extracted paragraphs.

[juanmnl]

Empty state

Extractors list

Select and delete extractor(s)

Designs