Release of v5.0.0-beta4

Add fallback option to ensure that all JCB tables and fields exist. Move the powers autoloader to its own file.

admin/sql/updates/mysql/5.0.0-beta3.sql

@@ -0,0 +1,2 @@
+ALTER TABLE `#__componentbuilder_joomla_component` ADD `add_php_method_install` TINYINT(1) NOT NULL DEFAULT 0 AFTER `add_php_helper_site`;
+ALTER TABLE `#__componentbuilder_joomla_component` ADD `php_method_install` MEDIUMTEXT NOT NULL AFTER `php_helper_site`;