Changes

Allow physics timewarp while rotating to a maneuver node

Only reset to 1x warp if in on-rails timewarp.
 (commit: 3e25056)

Ignore roll angular velocity in node executor

Roll was included when determining if the craft had settled down, but
since it was deliberately left uncontrolled, the roll rate would never
decrease; this prevented the node executor from going to warp unless
'kicked' (when timewarp removes all angular momemtum).

Fixes #1981.
 (commit: 5eef373)