Fix up/down being locked when MenuLog is open

Closes #751
Merge pull request #754 from dorkster/menu_log

Fix up/down being locked when MenuLog is open
Fix 753.

Thanks @hjd for finding these.

As a bonus: Formatting of AStarContainer (tabs instead of spaces)
Fix possible null pointer dereference
Merge pull request #755 from stefanbeller/fix753

Fix 753.
Merge remote-tracking branch 'upstream/master'