Add free Google Translate widget on website.

Features:

- Add translate language button at place where normal opencart language switch would appear
- Hidden when browser language is same as actual website language
- Can work mixed with real opencart installed languages, will appear only for not installed languages
- Automatically detect browser language and display corresponding language in translate list

Warning: Google policies: Free google widget usage is restricted to government, non-profit, and/or non-commercial websites.

For commercial usage it is necessary to use the Google Translate APIusing a module like Auto Translate Pro.