Improved campaign component, added various banners.

migrations/20190325001339_releases.js

@@ -1547,7 +1547,7 @@ exports.up = knex => Promise.resolve()
 				SELECT EXISTS(SELECT true WHERE (SELECT id FROM batches ORDER BY created_at DESC LIMIT 1) = release.created_batch_id);
 			$$ LANGUAGE sql STABLE;
 
-			CREATE FUNCTION banners_ratio(banner banners) RETURNS real AS $$
+			CREATE FUNCTION banners_ratio(banner banners) RETURNS numeric AS $$
 				SELECT ROUND(banner.width::decimal / banner.height::decimal, 2);
 			$$ LANGUAGE SQL STABLE;
 		`);