Delete icon from categories | Market open modal | HTTPS for CDN

`Delete icon from categories` open-classifieds/openclassifieds2#916
`HTTPS for CDN` open-classifieds/openclassifieds2#923
`Market open modal` open-classifieds/openclassifieds2#917 – This -> https://github.com/oliverds/open-eshop/blob/51b0b42daab4730e4a1f800ded9e0915bcbab209/embed.js#L145 adds a scrollbar if the content is longer than the user screen. Don’t know if there is a specific reason to have it off.