All events grouped by date and time

The events are ordered by date and time in the all events section of the schedule. The event schdule definition in program has been changed to order the events.

app/views/conference/_event.html.haml

@@ -0,0 +1,33 @@
+%a.unstyled-link{href: url_for(conference_program_proposal_path(@conference.short_title, event.id))}
+  .panel.panel-default
+    .panel-body
+      - if speaker = event.speakers.first
+        = image_tag speaker.gravatar_url, :class => "img-circle pull-right all-speaker-pic", |
+                                          :alt => speaker.name, |
+                                          :title => speaker.name |
+      %span.h3
+        = event.title
+        %br
+        %small
+          = event.subtitle
+      %h4
+        presented by #{event.speaker_names}
+      %p
+        = truncate(event.abstract, :length => 400)
+        = link_to 'more', conference_program_proposal_path(@conference.short_title, event.id) if event.abstract.length > 400
+      - if event.scheduled?
+        %span.track
+          %span.fa.fa-clock-o
+          %span.label{ style: "background-color: grey" }
+            = event.start_time.strftime('%H:%M')
+            \-
+            = event.end_time.strftime('%H:%M')
+        %span.track
+          %span.fa.fa-map-marker
+          %span.label{ style: "background-color: grey" }
+            = event.room.name
+      - if event.track
+        %span.track
+          %span.fa.fa-road
+          %span.label{ style: "background-color: #{event.track.color}" }
+            = event.track.name