insert task description as first line of new tasknotes
(as first described in issue #95) It is easy to make a tasknote, and then to forget what task that note is related to. When (if) taskopen creates a new tasknote, inserting the task description as the first line of the note solves this problem. 

An enhancement to this enhancement would be to insert the task description following the format used by taskwiki (https://github.com/tbabej/taskwiki) which enables users (that also use taskwiki) to see all of the task details (hitting enter, to run the info command) or to modify the task in any way, from within the tasknote. That first line would then be;

`[ ] description  #uuid.short`
