Another round of splash design

* Add map to splash
* Reverse venue<->conference relation
* Split venue address into fields
* Don't go through venue for lodgings anymore

db/migrate/20141118143700_add_address_fields_to_venue.rb

@@ -0,0 +1,12 @@
+class AddAddressFieldsToVenue < ActiveRecord::Migration
+  def change
+    add_column :venues, :street, :string
+    add_column :venues, :postalcode, :integer
+    add_column :venues, :city, :string
+    add_column :venues, :country, :string
+    add_column :venues, :latitude, :string
+    add_column :venues, :longitude, :string
+
+    remove_column :venues, :address, :text
+  end
+end