Removed (unnecessary) RightDetailsPanel and moved its child (`DetailsPanel`) to the west region.
`AnimationWindow` is now managed by `MapPanel`, since that's where it sits in the visual hierarchy.
Introduced MainToolbar, with buttons to control navigation.
Introduced NavigableCardLayout.
No longer trying to render (as this breaks tests when running under HtmlUnit).
Merge pull request #429 from aodn/navigation_buttons

Navigation buttons