New maps and 0.5.1

[Jens Granseuer <jensgr@xxxxxxx>]

Hey,

let me try it this way.

If nobody offers any reasons not to, I'll commit the two new missions
as is (plus handicaps for The Trek, and maybe a better name if I've
found one till then) on Friday.

At this point I'd also like to gear up for a 0.5.1 release, let's
say one week later.

Anybody not ok with this, speak up now.

Jens

PS: Has anybody else seen crashes in networking mode that
Laurent reported? If so, I'd obviously like to get them fixed
before the release, so I'd appreciate bug reports.