Improve capability tables navigation for authorization roles UI

Tested on https://folio-etesting-snapshot-diku.ci.folio.org/, https://folio-etesting-snapshot-consortium.ci.folio.org/ - works as expected

Table heights for each of the capability and capability set table are now limited. Scrolling added to each table.

Now it is possible to keep table header visible when viewing each line of the table.

See examples:

Open

The solution described by Zak will cover the needs of QA.

After a convo with @John Coburn and a review of the https://folio-org.atlassian.net/browse/UISAUTHCOM-10 PR #19, it looks like we only tried out 1/2 the suggested implementation for very-long-lists: 

1. pass virtualize

2. pass maxHeight={500} (or the height of your choice) in order to make the rows scrollable under pinned headers

I think maxHeight gives us what we want. The point of virtualize is to reduce memory consumption for long lists, but it's mostly a holdover from early MCL implementations that used infinite scroll instead of paging. i.e. because it was technically possible that you might try to scroll through 10k patrons while only displaying 50 rows at a time, you needed virtualize to only render the displayed rows instead of all 10k. True, we have many rows, but not so many that virtualization is necessary. I don't love hard-coding a pixel-height value like 500, but it's not terrible. Note the vertical-scrollbar in this screenshot, showing that we are 1/2 down the list of capability sets.

Open