All subs have be cleaned :
- removed useless
- merged some
- reordering Biblio.pm completly
- using only naming conventions
Seems to have broken nothing, but it still has to be heavily tested.
Note that Biblio.pm is now much more efficient than previously & probably more reliable as well.
previously, it wasn't possible to insert anything into the <head> on
an individual template unless it was the title of the page. Now, the
structure is a bit more flexible to allow additional head elements to
be included.
