Front-office: part 10

- changed the way the body in the text pages was positionned. It is now
in absolute coordinate avec "glued" to the viewport's borders
-Added some titles (h1) to Galanthis' pages in order to better recognise
the current page
- Changed Galanthis' index to integrate the new functionnalities (The
project is now called Mayaka Variation)
- Animations when the page is changed is now on hold. It will be the
user's choice to put it or not.