Added the `Help' menu and `About' item.  Also added the scroller actions so that people who want to change the action bindings have a template from which to start.
Added the `Help' menu and `About' item.  Also added the scroller
actions so that people who want to change the action bindings have a
template from which to start.

tphelps/xtickertape,epronk/xtickertape,epronk/xtickertape,tphelps/xtickertape,tphelps/xtickertape