Rewrite of feature proxy interception fir packetfence 4

Conflicts:

	lib/pf/iptables.pm
Manage httpd.proxy service
Apache configuration file in perl
Packaging RPM/DEB

Conflicts:

	debian/control
	lib/pf/services.pm
Fix pfcmd help and remove rebase stuff

Conflicts:

	lib/pf/services.pm
Fix for test
Passthrough fix
Move proxy interception in trapping section
Update doc