Scroll by entire "sections", i.e. panes of the ribbon, instead of scrolling by
a fixed number of pixels as it's much more useful and user-friendly to uncover
the next section entirely instead of asking the user to press on the arrow
several times before being able to use it.
Closes#15232.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74068 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Optionally show standard "Help" question mark button in the ribbon top right
corner and generate the appropriate event for it.
Closes#14576.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72495 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
