Support forcing the order of rooms in the schedule

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

@@ -11,8 +11,7 @@
     = semantic_form_for(@room, url: (@room.new_record? ? admin_conference_venue_rooms_path : admin_conference_venue_room_path(@conference.short_title, @room))) do |f|
       = f.input :name, input_html: { autofocus: true }
       = f.input :size, label: 'Capacity', input_html: {size: 5}
-      = f.input :url, label: 'URL'
-      %p.small
-        The URL is only visible to registered attendees.
+      = f.input :order, label: 'Order', input_html: {size: 5}, hint: 'Force the order of rooms in the schedule.'
+      = f.input :url, label: 'URL', hint: 'The URL is only visible to registered attendees.'
       %p.text-right
         = f.action :submit, as: :button, button_html: { class: 'btn btn-primary' }

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

@@ -12,15 +12,18 @@
         %thead
           %th Name
           %th Capacity
+          %th Order
           %th URL
           %th Actions
         %tbody
           - @rooms.each_with_index do |room, index|
             %tr
-              %td
+              %th
                 = room.name
               %td
                 = room.size
+              %td
+                = room.order
               %td
                 = room.url
               %td