Pdfonly

[ddavidebor]

This PR leaves only the PDF output. The reasons are the following:

• The docx output can be used only with extremely vanilla content
• the HTML output requires serious work, right now that is not available
• In latex we can use the beautiful latex figures and standardize the appearance

[ddavidebor]

Ci sono le nuove figure in latex qui, bisogna decidere cosa farci