Add ability to dismiss multiple vulnerabilities at once

Merged Sam Beckham requested to merge 35816-dismiss-multiple-vulnerabilities into master

What does this MR do?

This MR adds the ability to select multiple vulnerabilities on the dashboards and dismiss them all at once.

📼 Video Demo

https://youtu.be/P-WLfoJnJK8 (slightly out of date, see screenshots for up to date UI)

Screenshots

Screenshot_2019-12-12_at_18.01.10

Screenshot_2019-12-12_at_18.00.54

Does this MR meet the acceptance criteria?

Conformity

Availability and Testing

Closes #35816 (closed)

Edited by Sam Beckham