Adds rake task for recalculating tag custom counters

lib/tasks/tags.rake

@@ -0,0 +1,11 @@
+namespace :tags do
+  desc "Recalculates the debate and proposals counters"
+  task custom_count: :environment do
+    ActsAsTaggableOn::Tag.find_in_batches do |tasks|
+      tasks.each do |task|
+        task.recalculate_custom_counter_for('Debate')
+        task.recalculate_custom_counter_for('Proposal')
+      end
+    end
+  end
+end