Added the firstdayofweek string (0-Sunday, 1-Monday,....6-Saturday).

Needed because this info isn't in locales. This can be used in
a lot of places showing weekly info (backup_scheduled, calendar...)

lang/en/moodle.php

@@ -350,6 +350,7 @@
 $string['filesfolders'] = 'Files/folders';
 $string['filloutallfields'] = 'Please fill out all fields in this form';
 $string['findmorecourses'] = 'Find more courses...';
+$string['firstdayofweek'] = '0'; //0-Sunday, 1-Monday,....6-Saturday
 $string['firstname'] = 'Given name';
 $string['firsttime'] = 'Is this your first time here?';
 $string['followingoptional'] = 'The following items are optional';

lang/es/moodle.php

@@ -333,6 +333,7 @@
 $string['filesfolders'] = 'Archivos/directorios';
 $string['filloutallfields'] = 'Por favor llene todos los campos de este formulario';
 $string['findmorecourses'] = 'Encontrar más cursos...';
+$string['firstdayofweek'] = '1'; //0-Sunday, 1-Monday,....6-Saturday
 $string['firstname'] = 'Nombre';
 $string['firsttime'] = 'Registrarse como alumno';
 $string['followingoptional'] = 'Los siguientes datos son opcionales';