Proposing a new repository structure for docs italia compatibility.
The current structure has the following tree:

├── AUTHORS.md
├── CONTRIBUTING.md
├── docs
│   ├── en
│   │   ├── example
│   │   │   ├── publiccode.minimal.yml
│   │   │   └── publiccode.yml
│   │   ├── forks.md
│   │   ├── index.md
│   │   ├── pa-types.md
│   │   ├── schema.it.md
│   │   ├── schema.md
│   │   └── tags.md
│   └── it
│       ├── example
│       │   ├── publiccode.minimal.yml
│       │   └── publiccode.yml
│       ├── forks.md
│       ├── index.md
│       ├── pa-types.md
│       ├── schema.it.md
│       ├── schema.md
│       └── tags.md
├── LICENSE
└── README.md

As such, localized docs are located inside the relevant folders (named with the language code).
Moreover, this PR removes the editor from this repository (the editor folder has been removed and moved to this repo).
Also, the files related to Docker/Travis/Jekyll are removed. This is because this repo will not host a static website anymore but it will be ingested and published through the docs platform. As such, the files required for the stand-alone deployment have been removed.

@alranel please review.
Thank you