WIP: Support task Element#406

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ghost wants to merge 3 commits intomainfrom

Commits on Nov 29, 2019

First draft of task in XHTML

tomschr
authored and
Stefan Knorr
committed
First draft of task in FO

tomschr
authored and
Stefan Knorr
committed
Update test document for procedures to also include a task
Stefan Knorr
committed