Migration to GitHub Pages

I have been trying to do some changes in this blog, and today I finally had some spare time to do it.

I have migrated all the posts written in English to https://www.pentester.es, but not those written in Spanish. I will keep them in https://oldblog.pentester.es instead.

New posts will be written in English (not Spanish and English as I did for some time), in the main domain https://www.pentester.es