MagnoliaTabSheetViewImpl uses a ScrollPanel from MGWT to scroll content within one tab/or all at once with show all.

Supposedly, this was preferred over a plain GWT ScrollPanel because the latter does seem to play nicely with touch (see http://gwt.googleusercontent.com/samples/Showcase/Showcase.html#!CwDockPanel).

However the Panel component, as seen on the vaadin sampler, seems to handle touch nicely - it has momentum, bounces, feels native.

We should use MGWT for touch events only, not for UI components, because MGWT theme introduces inline styles that interfere with our own styles (e.g. fonts, as seen in SCRUM-1688)