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

spec/views/admin/call_for_papers/show.html.haml_spec.rb

@@ -0,0 +1,13 @@
+require 'spec_helper'
+
+describe 'admin/call_for_papers/show' do
+
+  it 'renders call for papers details' do
+    assign :conference, create(:conference)
+    assign :call_for_paper, create(:call_for_paper)
+    render
+    expect(rendered).to include(1.day.ago.strftime('%A, %B %-d. %Y'))
+    expect(rendered).to include(7.days.from_now.strftime('%A, %B %-d. %Y'))
+  end
+
+end

spec/views/admin/callforpapers/show.html.haml_spec.rb

@@ -1,14 +0,0 @@
-require 'spec_helper'
-
-describe 'admin/callforpapers/show' do
-
-  it 'renders callforpapers details' do
-    assign :conference, create(:conference)
-    assign :cfp, create(:call_for_papers)
-    render
-    expect(rendered).to include(1.day.ago.strftime('%Y-%m-%d'))
-    expect(rendered).to include(7.days.from_now.strftime('%Y-%m-%d'))
-    expect(rendered).to include('We call for papers')
-  end
-
-end

spec/views/admin/social_events/index.html.haml_spec.rb

@@ -1,15 +0,0 @@
-require 'spec_helper'
-
-describe 'admin/social_events/index' do
-
-  it 'renders social events' do
-    @social_event = create(:social_event)
-    assign :conference, @social_event.conference
-    render
-    expect(rendered).to include('Example Social Event')
-    expect(rendered).to include('Lorem Ipsum Dolsum')
-    expect(rendered).to include("#{Date.today.strftime('%Y')}")
-    expect(rendered).to include("#{Date.today.strftime('%B')}")
-    expect(rendered).to include("#{Date.today.strftime('%-d')}")
-  end
-end