Fixed an issue with searching in Output and Console windows.

This was broken by an earlier commit (df6b9fe9), which enabled search in
the current editor window. This change initiates the search in the last
editor component with a focus.
Added check for pending data to improve re-starting debugging session.
Added check for existing process id before stopping the process.
Upgraded MobDebug (0.606) for `Detach Process` to correctly close debugging.