Upgrading cms_system

0.7.3 to 0.7.4

1. Update /application/hooks/App_hooks.php.
2. Update /application/config/constants.php (update cms_system_VERSION).
3. Update all files in /cms_system/, or:
   
   
   • Update /cms_system/core/BF_Router.php.
   • Update all files in /cms_system/docs/.
   • Update /cms_system/libraries/Template.php.
   • Update all files in /cms_system/modules/builder/.
   • Update /cms_system/modules/settings/libraries/Settings_lib.php.