Setting spelling correction

https://github.com/opencart/opencart/commit/40781488846f36a75aa49d6de56b106a19d9d2a1
Customer group spelling corrections

https://github.com/opencart/opencart/commit/c768ba51db7e02c191ae22be4e6321989becb3c5
Update return reason validate to match database

https://github.com/opencart/opencart/commit/5f6147fbed3f0a55be91ad11b140066e3998d2c9