Add markdown formatting for sponsor descriptions

app/views/admin/sponsors/_form.html.haml

@@ -10,7 +10,7 @@
   .col-md-8
     = semantic_form_for(@sponsor, url: (@sponsor.new_record? ? admin_conference_sponsors_path : admin_conference_sponsor_path(@conference.short_title, @sponsor))) do |f|
       = f.input :name, input_html: { autofocus: true }
-      = f.input :description
+      = f.input :description, input_html: { rows: 5, cols: 20, data: { provide: 'markdown-editable' } }, hint: markdown_hint
       = image_tag f.object.picture.thumb.url if f.object.picture?
       = f.input :picture
       = f.input :website_url

app/views/admin/sponsors/index.html.haml

@@ -24,7 +24,7 @@
               %td
                 = sponsor.name
               %td
-                = truncate(sponsor.description)
+                = truncate(markdown(sponsor.description))
               %td
                 = sponsor.website_url
               %td

app/views/conferences/_modal_description.haml

@@ -18,6 +18,6 @@
                 - if object.picture?
                   = image_tag get_logo(object), class: img_classes
             %p.description
-              = object.description
+              = markdown(object.description)
           .modal-footer
             = link_to nil, object.website_url, target: '_blank'