Made the "Questions?" icon a little smaller so it will fit better on
the breadcrumb area above phases. Forced the breadcrumbs to appear
even for simple tools like Spice3F4, which have only 2 (input/output)
pages, so that the About/Questions?? links will appear for those tools
as well.
Fixed a bug reported by Steve (#12695) which caused the "Simulate"
button to pop up in tools with phases after multiple simulations.
This looked really strange because About/Questions?? was now appearing
in an extra spot.