Creating collapsed styles for each list item in the collapsed templates.
Merge branch 'talbs/styling-problem' into sanchez/TIM-178-Peer-UI

Conflicts:
	apps/openassessment/templates/openassessmentblock/oa_peer_assessment_collapsed.html
	apps/openassessment/templates/openassessmentblock/oa_response_collapsed.html
	apps/openassessment/templates/openassessmentblock/oa_self_assessment_collapsed.html