Modify the about page so it uses Jekyll's layouts

[TabrisArg]

What's the problem

The current page isn't using a layout, it's using plain HTML

What's the solution

Create a new layout for the about page and add the respective front matter to the about page

Requirements

• [x] Create an "about" layout
• [x] Add the corresponding Front Matter to the Layouts page

[TabrisArg]

Implemented.