the mail menu is a client action, so not subject to the same template
as regular views. so, it had to be patched to properly scroll like
other views (meaning: the 'header', left menu and top menu are fixed)
Also, changes the width of the searchbbar into a min-width css property,
to allow it to grow more. The reason is that we don't want the searchbox
to take two lines (or more), which will force the view_manager_header to be
higher, and which will cause slight issues with the scrollbar (absolutely
positioned)
Géry Debongnie
6e6ae4cbf9