#144 - not English language selected by default during installation wasn't applied

install/sql/addon.sql

@@ -12,6 +12,7 @@ UPDATE `sys_options` SET `VALUE` = '{site_title}' WHERE `Name` = 'site_title';
 UPDATE `sys_options` SET `VALUE` = '{site_email}' WHERE `Name` = 'site_email_notify';
 UPDATE `sys_options` SET `VALUE` = '{oauth_key}' WHERE `Name` = 'sys_oauth_key';
 UPDATE `sys_options` SET `VALUE` = '{oauth_secret}' WHERE `Name` = 'sys_oauth_secret';
+UPDATE `sys_options` SET `VALUE` = '{language}' WHERE `Name` = 'lang_default';
 UPDATE `sys_options` SET `VALUE` = '{time}' WHERE `Name` = 'sys_install_time';
 
 UPDATE `sys_modules` SET `version` = '{version}' WHERE `name` = 'system';