Remove minify from general settings, Bing/Google validations - Custom JS

- open-classifieds/openclassifieds2#996 (Minify CSS/JS remove from general settings)
- open-classifieds/openclassifieds2#992 (Bing, G webmaster tools validations - Custom JS)

 - Commit on [BB](https://bitbucket.org/neo22s/open-classifieds-private/commits/5abef8c11259830d1a9bf3e2d59d7d56ed7cc063) for premium themes