Add venue_photos model and venue_photos admin controller in order to add more images to Venues and allow to delete it.

Show the additional photos in splash. Added fancybox gem for zoom when click on the additional photo.

fix #777

app/controllers/admin/venue_photos_controller.rb

@@ -0,0 +1,15 @@
+module Admin
+  class VenuePhotosController < Admin::BaseController
+    load_and_authorize_resource :conference, find_by: :short_title
+    load_and_authorize_resource :venue, through: :conference, singleton: true
+
+    def destroy
+      photo = @venue.venue_photos.find(params[:id])
+      if photo.destroy
+        redirect_to  edit_admin_conference_venue_path(@conference.short_title), notice: 'Photo deleted'
+      else
+        redirect_to  edit_admin_conference_venue_path(@conference.short_title), alert: 'Photo not deleted'
+      end
+    end
+  end
+end

app/controllers/admin/venues_controller.rb

@@ -15,6 +15,9 @@ module Admin
       @venue = @conference.build_venue(venue_params)
 
       if @venue.save
+        if params[:venue_photos]
+          create_additional_photos(@venue, params[:venue_photos])
+        end
         redirect_to admin_conference_venue_path,
                     notice: 'Venue was successfully created.'
       else
@@ -24,6 +27,9 @@ module Admin
 
     def update
       if @venue.update_attributes(venue_params)
+        if params[:venue_photos]
+          create_additional_photos(@venue, params[:venue_photos])
+        end
         redirect_to(admin_conference_venue_path(conference_id: @conference.short_title),
                     notice: 'Venue was successfully updated.')
       else
@@ -46,5 +52,11 @@ module Admin
     def venue_params
       params.require(:venue).permit(:name, :street, :postalcode, :city, :country, :longitude, :latitude, :description, :website, :photo, :lodgings_attributes, :conference_id)
     end
+
+    def create_additional_photos(venue, photos)
+      photos.each { |photo|
+        venue.venue_photos.create(photo: photo )
+      }
+    end
   end
 end