Add Bengali for Bangladesh and India to LEK_languages

We need to add the codes for those to sublanguages and modify the one for Bengali without country code.

 
INSERT INTO `LEK_languages` (`id`, `langName`, `lcid`, `rfc5646`, `iso3166Part1alpha2`, `sublanguage`, `rtl`, `iso6393`) VALUES (NULL, 'Bengalisch (Bangladesh)', '2117', 'bn-BD', 'bd', 'bn-BD', '0', NULL);
 
INSERT INTO `LEK_languages` (`id`, `langName`, `lcid`, `rfc5646`, `iso3166Part1alpha2`, `sublanguage`, `rtl`, `iso6393`) VALUES (NULL, 'Bengalisch (Indien)', '1093', 'bn-IN', 'in', 'bn-IN', '0', NULL);
 
UPDATE `LEK_languages` SET `iso3166Part1alpha2` = NULL, `sublanguage` = NULL WHERE `LEK_languages`.`rfc5646` = 'bn';
 
Also we need to add the translation to our xliff for EN

Bengalisch (Bangladesh) => Bengali (Bangladesh)

Bengalisch (Indien) => Bengali (India)