Integrate the splash page into the general layout

* Cleanup the CSS
* Fix more views then you have fingers and toes
* Introduce position(weight) for sponsor levels
* Fix bootstrap/datatable integration

db/migrate/20141113134103_add_position_to_sponsorship_level.rb

@@ -0,0 +1,5 @@
+class AddPositionToSponsorshipLevel < ActiveRecord::Migration
+  def change
+    add_column :sponsorship_levels, :position, :integer
+  end
+end