Since I am exclusively using `topen`
(https://git.martyoeh.me/Marty/topen) for my task notes currently, this
commit gets rid of any left-over config files setting up `taskopen`.
Starts to simplify the taskwarrior setup a tiny bit.
Can show tasks accomplished today (tdd, 'Task Done toDay'), since
yesterday (tdy, 'Task Done since Yesterday'), or in the last week (tdw,
'Task Done in the Week').
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.
