Added semi-functional administration pages

db/migrate/20160621020123_add_space_to_event_locations.rb

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+class AddSpaceToEventLocations < ActiveRecord::Migration
+  def change
+    add_column :event_locations, :space, :string
+  end
+end

db/migrate/20160621051912_add_meals_to_conferences.rb

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+class AddMealsToConferences < ActiveRecord::Migration
+  def change
+    add_column :conferences, :meals, :json
+  end
+end

db/migrate/20160622011811_add_locale_to_events.rb

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+class AddLocaleToEvents < ActiveRecord::Migration
+  def change
+    add_column :events, :locale, :string
+  end
+end