Take language code out of MD5 value to make cid table record more readable

Hi

Current cid format is:

[view_name]:[display_id]:results:[md5-of-arguments]
[view_name]:[display_id]:results:[md5-of-arguments]:[per-role-info]

Language code is included into md5 value.

For language debugging purposes it would be much better to have language code outside the md5 value.

Something like:

[view_name]:[display_id]:results:[md5-of-arguments]:[language_code]
[view_name]:[display_id]:results:[md5-of-arguments]:[language_code]:[per-role-info]