Fixed taskopen script not opening the correct numbered task
when passed one (either on the command line with `to <id>`
or through taskwarrior with `t <id> open`).
Now it does directly open the correct note.
Extended active task listing to show both the active task from
taskwarrior, but also any currently 'tracking' task from timewarrior.
Ideally, those should be the same - but if they mismatch or timwarrrior
is not correctly tracking the active task, this is still good
information to have at a glance.
Since I am striving for closer connection between my task management, my
mail suite and my calendar appointments, it makes sense to unify all
'office' tasks into the single office module instead of keeping
taskwarrior outside of it.
