Fixed undefined user ID in postgres function. Fixed and improved mobile alignment for new and stash icons on scene tile.

migrations/20190325001339_releases.js

@@ -1157,7 +1157,8 @@ exports.up = knex => Promise.resolve()
 		// allow vim fold
 		return knex.raw(`
 			CREATE FUNCTION current_user_id() RETURNS INTEGER AS $$
-				SELECT current_setting('user.id', true)::integer;
+				/* if the user ID is undefined, the adapter will pass it as a string, which cannot be cast as NULL by ::integer */
+				SELECT NULLIF(current_setting('user.id', true), '')::integer;
 			$$ LANGUAGE SQL STABLE;
 
 			/* We need both the release entries and their search ranking, and PostGraphile does not seem to allow virtual foreign keys on function results.