Small Modal Size for Coordinator Blacklist Window

[joshualiao]

Steps to reproduce:

1. As a coordinator, add ~6 students to section and bring it over capacity.
2. It complains; select enroll and expand section.
3. Try removing a student using the red x on the student names.

The popup window to confirm blacklisting a student from the course is too small— you can only see "BLACKLIST" and have to scroll.

[aaudreywu]

We tried to reproduce the error, but we didn't get the same results.

[joshualiao]

Could be my local repo problem? I re-pulled and got the same thing still. See: #451 (comment)

[smartspot2]

Closing since I can't reproduce the issue; it's likely something with your browser, or with some weird behavior with CSS.