Advanced DHCP Client Options & Config File Override

DHCP v4:
Protocol Timing
Send Options
Request Options
Require Options
Option Modifiers

DHCP v6:
Interface Statement
Identity Association Statement
Prefix Interface Statement
Authentication Statement
Keyinfo Statement

DHCP v4 & v6:
Config Override File
Add section tag to v6 documentation links.

Put v4 send, request, require & modifies in lease requirements and requests section.
No functional changes.
Config file formating:

FIX - Add new line after comment so first option statement is on uncommented line.
Prefix send host-name with tab.
Correct mouseover description for adding a certificate. Fixes #3017
vpn.inc calls functions from ipsec.inc but doesn't actually include it in all cases where it's needed.
Correction on last commit (CURL options)

My last commit only worked on "Save & Force Update" but not on a
reconnect. Fixed that
Merge pull request #666 from chrostek/master

Fix for CURL options (Custom DynDNS)
Also consider 0.0.0.0/0 here since it fails on is_subnet() but is a valid/special config. Fixes #3016
Remove extra parenthesis
Add the 6rd gateway information
Allow selecting "Localhost" as an interface for IP Alias VIPs - this way you can make IP Alias VIPs to use for binding in a routed scenario with CARP without creating an IP conflict.
Allow localhost IP Alias VIPs to sync, too
Status-Queues: Get the stats gauge for PPS or bandwidth

Let the user select the values to show in the stats gauge between PPS and bandwidth.
Merge pull request #667 from mdima/master

Status-Queues: Get the stats gauge for PPS or bandwidth
Do better checks and do not include an interface that will be skipped to the known ifaces
Wait 1 second before starting the other dhcp6c since pkill does not wait for the process to exit
Correct the command for setting the 6rd gw
SWF

As said on the pFsense forum http://forum.pfsense.org/index.php/topic,62863.0.html It works and tested by me.
Actually try to get the real interface for v6 family to correctly get stf(virtual) interfaces
Merge pull request #669 from francisuk/patch-1

SWF