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/call_for_papers/show.html.haml

@@ -0,0 +1,66 @@
+.row
+  .col-md-12
+    .page-header
+      %h1 Call for Papers
+      %p.text-muted
+        Call for people to submit events to your conference
+- if @call_for_paper
+  .row
+    .col-md-8
+      %dl.dl-horizontal
+        %dt
+          Start Date:
+        %dd#start_date
+          = @call_for_paper.start_date.strftime('%A, %B %-d. %Y')
+        %dt
+          Start Date:
+        %dd#end_date
+          = @call_for_paper.end_date.strftime('%A, %B %-d. %Y')
+        %dt
+          Days Left:
+        %dd
+          - days = (@call_for_paper.end_date - Date.today).to_i
+          = pluralize(days, 'days')
+        %dt
+          Event types:
+        %dd
+          = event_types(@conference)
+        %dt
+          Tracks:
+        %dd
+          = tracks(@conference)
+        %dt
+          Public
+        %dd#cfp_in_splash
+          - if @call_for_paper.include_cfp_in_splash
+            True
+          - else
+            False
+        %dt
+          Public Schedule
+        %dd#schedule_public
+          - if @call_for_paper.schedule_public
+            Yes
+          - else
+            No
+        %dt
+          Schedule changeable?
+        %dd#schedule_changes
+          - if @call_for_paper.schedule_changes
+            Yes
+          - else
+            No
+        %dt
+          Rating Levels
+        %dd#rating
+          = @call_for_paper.rating
+  .row
+    .col-md-12.text-right
+      = link_to(edit_admin_conference_call_for_paper_path(@conference.short_title), class: 'btn btn-primary') do
+        Edit
+      = link_to(admin_conference_call_for_paper_path(@conference.short_title), method: 'delete', class: 'btn btn-danger') do
+        Delete
+-else
+  .row
+    .col-md-12.text-right
+      = link_to 'Create Call for Papers', new_admin_conference_call_for_paper_path(@conference.short_title), class: 'btn btn-primary'