Use the current filters and sorting on the user grading table in the single
page grading app when it is possible.
This replaces the popover used to configure the filters to one that closely matches the
one from the grading table. It supports standard filters, workflow filters and allocated marker filters.
It will also support group filtering and suspended user filtering but we don't show the controls for those in
the single grading page.
Previously there was a logic bug where by if some students were filtered
from the list, the label for another student could be attached to the
'filered' student.
This fix reworks the promises a bit so we render the student summary and
then build an row with the explict user id, rather than itterating through
the array later.
I also remove the storing of the initial promise in a varible because
this is an easy way to introduce a bug (not waiting for the .then()
chained promise)
If the grader does not have the accessallgroups capability,
or groups mode is set to separate groups and the user is not
a member of the group then no participants are shown.
