Revert "remove/disable legacy map system js+css processing"
Revert "remove/disable legacy map system js+css processing"

This reverts commit 436c0da660859dd7d87d54ae50143642e5d6ea37.

This patch is conflicting with another one in carto2013 branch.

c2corg/camptocamp.org,c2corg/camptocamp.org,c2corg/camptocamp.org,c2corg/camptocamp.org,c2corg/camptocamp.org