Merge with upstream

Author: karrirasinmaki

lib/api/utilities/functions.php

@@ -266,6 +266,14 @@ function beans_url_to_path( $url, $force_rebuild = false ) {
 		$url          = 'http://' . ltrim( $url, '/' );
 	}
 
+	// Stop here if it is not an internal url.
+	if ( false === stripos( $url, parse_url( site_url(), PHP_URL_HOST ) ) ) {
+		// If it is not an internal url we are having relative url instead.
+		// Add ./ in front of the relative url to make it relative path.
+		// After sanitize it will be converted to absolute path.
+		return beans_sanitize_path( './' . $url );
+	}
+
 	// It's not an internal URL. Bail out.
 	if ( false === stripos( parse_url( $url, PHP_URL_HOST ), parse_url( $site_url, PHP_URL_HOST ) ) ) {
 		return isset( $original_url ) ? $original_url : $url;