Revert "documentation de nopagebreakhanging"

This reverts commit 32bf52604cd6349d0ea93b51770ae9564a8bd796.
Revert "implementation de nopagebreakhanging dans eledmac"

This reverts commit f497bbe0234703887308655b17ae167acc37f7f3.

Conflicts:
	eledmac.dtx