Disambiguate tab titles when they are identical after shortening

[danielcompton]

We have page.state.editor and post.state.editor namespaces. They aren't distinguishable in IntelliJ tabs because they are both shortened to p.state.editor. For cases like these, I think I'd like to see them progressively lengthened until they aren't identical, e.g. pa.state.editor and po.state.editor. Or perhaps even better, shorten the other commen namespace segments, so page.s.editor and post.s.editor.