Implement consistent admin interface

* Consistent route/model/controller/view layout
* Get rid of unused photos, speakers, dietchoices, social_events controllers
* Drop unused :public from Rooms and :description from CallForPapers

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

@@ -1,4 +1,15 @@
-= f.input :name
-= f.input :size, :input_html => {:size => 5}
-= f.input :public, :as => :boolean
-= f.action :submit, as: :button, button_html: { class: 'btn btn-primary' }
+.row
+  .col-md-12
+    .page-header
+      %h1
+        - if @room.new_record?
+          New
+        Room
+        = @room.name
+.row
+  .col-md-8
+    = semantic_form_for(@room, :url => (@room.new_record? ? admin_conference_rooms_path : admin_conference_room_path(@conference.short_title, @room))) do |f|
+      = f.input :name
+      = f.input :size, :input_html => {:size => 5}
+      %p.text-right
+        = f.action :submit, as: :button, button_html: { class: 'btn btn-primary' }

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

@@ -1,8 +0,0 @@
-%h1 Editing Room
-
-.row
-  .col-md-8
-    = semantic_form_for @room, url: admin_conference_room_path(conference_id: @conference.short_title, id: @room.id) do |f|
-      = render 'form', f: f
-
-= link_to 'Back', admin_conference_rooms_path

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

@@ -1,32 +1,30 @@
-%h1 Rooms
+.row
+  .col-md-12
+    .page-header
+      %h1 Rooms
+      %p.text-muted
+        The rooms of your conference venue
 
 - if @conference.rooms.any?
   .row
     .col-md-12
-      %table.table#rooms
+      %table.table.table-hover#rooms
         %thead
-          %th #
           %th Name
           %th Size
-          %th Public
-          %th Edit
-          %th Delete
+          %th Actions
         %tbody
           - @conference.rooms.each_with_index do |room, index|
             %tr
-              %td
-                = index + 1
               %td
                 = room.name
               %td
                 = room.size
-              %td
-                = room.public
               %td
                 = link_to 'Edit', edit_admin_conference_room_path(@conference.short_title, room.id),
                 method: :get, class: 'btn btn-primary'
-              %td
                 = link_to 'Delete', admin_conference_room_path(@conference.short_title, room.id),
                 method: :delete, class: 'btn btn-danger', data: { confirm: "Do you really want to delete #{room.name}?" }
-
-= link_to 'New Room', new_admin_conference_room_path(@conference.short_title), class: 'btn btn-success'
+.row
+  .col-md-12.text-right
+    = link_to 'Add Room', new_admin_conference_room_path(@conference.short_title), class: 'btn btn-primary'

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

@@ -1,7 +0,0 @@
-%h1 New Room
-.row
-  .col-md-8
-    = semantic_form_for @room, url: admin_conference_rooms_path(conference_id: @conference.short_title) do |f|
-      = render 'form', f: f
-
-= link_to 'Back', admin_conference_rooms_path