Show events on the dive profile

Show events on the dive profile

This is *really* ugly.  We really should just create some kind of widget
that when moused over will show the event.  Or something.  Rather than
putting text on top of other text: the events - when they happen - are
usually bunched together (PO2 warnings, max depth, fast ascent leading
to mandatory safety stop, you name it).

But at least this way we see that the data is there, even if we see it
in ugly ways.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>