cubicweb-vcreview #4881284 Replace user callback with ajaxfunc to mark task as done [done]

Replace user callback with ajaxfunc to mark task as done

As a side benefit we only reload the task view instead of the whole page.

prioritynormal
typebug
done in<not specified>
load left0.000
closed by#570fbb957f58 Replace user callback with ajaxfunc to mark task as done
patchReplace user callback with ajaxfunc to mark task as done [applied]