[Feature] new layout/design

[orioltf]

A bit of reorganisation:

• The index page is now a partial that is included as a sidebar in every module and styleguide page for easy switching
• The module layout has been cleaned because now every module has at least 1 variant. The targe is to go BEM, so the targe is to be able to define variants, themes, modificators and so on
• The module layout places the variants in a new right sidebar
• The module and styleguide received some new CSS with the target of better understanding which are the demo boundaries
• The index page can now be used for general documentation/marketing purposes. By default it kinda says what is Estático, feel free to propose what would you like we to have in there by default. I can see many potential however, for project oriented information.

How do you see this proposal?