Fixed click-through to filters at top of plugins list.
Reduce plugin sidebar item height by 8px.

Unfortunately I can't use different sizes in edit and normal modes,
because I must manually call updateSize() on the core-list after the
transition has finished, which causes a jarring re-transform of the list
elements.
Reduced sidebar plugin item height by 8px again.

In non-edit mode only. To workaround the transform jump, transition the
transforms, but only during the card flip animation, and update them
when beginning the item content transitions, so that everything happens
at the same time.