feature request: filter on label

[escapewindow]

We have filters for running/pending/completed etc, which are helpful.

Given a 3000+ task graph, it's not always enough. If I want to look at all the windows l10n in a running graph, it can be frustrating to have tests or completing linux or mac jobs shifting the task view... I'll probably open another issue about that. It's also nice if I want to view those 20ish tasks, no matter what state they're in, without having to scroll through the 3000+ tasks in the whole graph.