Adding Gitlab instances from Preferences dialog does not work for FF

See FF bug 1382953.

Work around by adding a link to options.html?

changed time estimate to 1h 30m

mentioned in issue #14 (closed)

added Bug label

changed milestone to %1.0

assigned to @adimit

added To Do label

added Doing and removed To Do labels

closed

removed Doing label

added 12m 6s of time spent

mentioned in issue #24 (closed)