[ENHANCEMENT]: UI - not all info when selecting pretask to add to supertask

[jessevz]

Description

In the old UI, when at the supertask detail page, to add new pretasks you have a table, with more information, for example the estimated keyspace, which is nice to know when adding to a supertask. Now it is a drop down modal, which can be slow when you have a lots of pretasks. I would suggest changing it to a paginated table again.