Display Committee Review on #show and #edit.

Also show submission_text on the #show page for authors.

app/views/proposals/_proposal_form.html.haml

@@ -28,11 +28,18 @@
     = render 'proposals/submission_type_content_form', f: f, program: @program
 
     -# TODO-SNAPCON: Extract this to be a `conference_committee_role?`
-    - read_only = !current_user.has_any_role? :admin, { name: :organizer, resource: @conference }, { name: :cfp, resource: @conference }
+    - if current_user.has_any_role?(:admin, { name: :organizer, resource: @conference }, { name: :cfp, resource: @conference })
       %br
       = f.input :committee_review,
-                input_html: { rows: 5, data: { provide: 'markdown' }, readonly: read_only },
+                input_html: { rows: 5, data: { provide: 'markdown' } },
                 hint: markdown_hint('This field is shared with the submission authors.')
+    - elsif @event.committee_review.present?
+      %br
+      %strong.control-label Committee Review
+      %small
+        Use this feedback to improve your submission.
+      .well
+        = markdown(@event.committee_review)
 
     - if @program.cfp&.enable_registrations?
       = f.inputs 'Enable pre-registration' do