Changes

Classic ascent circularization

Don't try to set the SMA based on desired altitude, but just
circularize at whatever the apoapsis actually is.

We could try to circularize at the precise altitude if the desired altitude <
apo, but that could get more costly so I'm going to skip thinking about
it (some people will want it, some people probably won't, heuristics
will add more edge conditions and buttons and I don't think it is worth
it).

closes #1971
closes #888 (maybe)
 (commit: 7e786e1)