Turn planner back on
forget old filename on starting a new log.

Thist closes bug #253.
Merge branch 'master' of https://github.com/torvalds/subsurface
Merge branch 'master' of https://github.com/torvalds/subsurface
Merge branch 'master' of https://github.com/torvalds/subsurface
Merge branch 'master' of https://github.com/torvalds/subsurface
Merge branch 'master' of https://github.com/torvalds/subsurface
Merge branch 'master' of https://github.com/torvalds/subsurface
Merge branch 'master' of https://github.com/torvalds/subsurface
Merge branch 'master' of https://github.com/torvalds/subsurface
Merge branch 'master' of https://github.com/torvalds/subsurface
Merge branch 'master' of https://github.com/torvalds/subsurface
Merge branch 'master' of https://github.com/torvalds/subsurface
Merge branch 'imagedisplay' of https://github.com/atdotde/subsurface
Merge branch 'master' of https://github.com/torvalds/subsurface
Merge branch 'master' of https://github.com/torvalds/subsurface
Merge branch 'master' of https://github.com/torvalds/subsurface
Merge branch 'master' of https://github.com/torvalds/subsurface
Merge branch 'master' of https://github.com/torvalds/subsurface
Merge branch 'master' of https://github.com/torvalds/subsurface