[Assignments] Increase column width for Batch Edit Assignment Dates

[EricCentauri]

Problem statement:

It's hard to quickly use the "Batch Edit Assignment Dates" page because of how limited in width the columns are.

Proposed solution:

Please increase column width for the "title" column, or add functionality for us to do so. (being able to drag the edges to resize would be great).

User role(s):

instructor