Add an icon for comment issue verification.

Review Request #9095 — Created July 20, 2017 and submitted — Latest diff uploaded


Review Board


This icon is used to represent an issue that is pending verification by
the reviewer. It has the same shape as an open issue, with a more
subdued (but still present) color, and arrows pointing in opposite
directions to indicate a back-and-forth between reviewer and developer.

A .rb-icon-issue-verifying CSS class has been added for using this icon.

Tested in the browser by replacing the icon's CSS class on an open issue.