Improve WB/BE results panel UX (scrollable + resizable)

[bronwyncombs]

Problem

The Results panel is a very helpful tool in WorkBench and Batch Edit. It allows users to visualize the impact of their upload/commit and can be key to preventing duplication or accidental blank records in the database.

Currently, the Results panel is cut off by the screen when there are more than ~10 tables, depending on the length of the table names. There is no scroll bar or way to know that more tables are being uploaded to by the dataset, considerably undermining the purpose of this feature.

100% zoom on Chrome:

Further, the Close button (and Create Record Set if uploaded) are hidden unless the screen is zoomed out to reveal the rest of the tables.

75% zoom:

Solution

1. Add a scroll bar to Results so all tables can be viewed without zooming out in the browser.
2. The Close and Create Record Set buttons should be pinned to the bottom of this panel so they are always visible.
3. It may also be nice to be able to pull on the left side of the panel to resize it on the screen. This would allow users to view more tables in the panel at once since some table names are so long they take up two rows.

[bronwyncombs]

closing in favor of re-opening #4896