CONTRIB-4732 :: "All your responses" page not displaying correctly Rate questions

Signed-off-by: Joseph Rézeau <moodle@rezeau.org>
CONTRIB-4734 :: Improve processing of Activity completion

Signed-off-by: Joseph Rézeau <moodle@rezeau.org>
Merge branch 'MOODLE_25_STABLE' into MOODLE_25_BFC