Disconcerting behavior: if you create a new Multi-branch pipeline, you do not get the new config page styles when looking at
Concerns: we don't want plugins to have to take a 2.0 dependencies to get nice config pages when running on a 2.0 Jenkins.
Expectation: Every item type that has a configuration screen will need to be explicitly updated to support the new tab styling.
Root cause: there is no common page/form/tag that is inherited by all item configuration pages (it is copied).
Decision: this is not a blocker for Jenkins 2 beta/ga (as long as they aren't worse than they used to be).