This is almost useless. WP_CONTENT_URL is a deprecated constant only used in one theme, elegant-grunge. The definition is based on the output get_option('siteurl'), which I think should also be set to the https address. Nonetheles, just to be safe, let's keep this patch for the moment, but we should check if we can drop it.

- moved themes related patches to patches/themes (yet to check)
- moved wp core patches to patches/core
- split the mega-patch for hyperdb in the individual edits. I removed the one related to nextgen-gallery since I think it is not relevant anymore (but I might be wrong)