Merge pull request #396 from e-piksel/master

fixed error_custom_field_value
fix for reports going very slow
Merge pull request #399 from e-piksel/master

catalog_desc_limit renamed -> list_description_limit
reports updated
Merge branch 'master' of https://github.com/opencart/opencart
update to redesign layout route system

Problem with the ModelDesignLayout->getLayout($route)
renamed product option field from option value to just value.

extension and template developers need to make changes accordingly.
Fixed error_desc_limit -> error_limit