pfSense

Add freeDNS v6 support

FreeDNS IPv6 support confirmed working using same method as v4 with v6 source address. Simple second service with _useIPv6
(cherry picked from commit ac16181a2cfefec293e0562a7bfe8e2f7140e191)

Add menu item for freeDNS v6
(cherry picked from commit d102e2d5d3f238fa4f35a1d935366a2e6153804e)

Status / Interfaces - DNS Servers

The DNS servers are not necessarily ISP provided.

(cherry picked from commit 78869d5e82f149ad5bfb1e1d97d958d0bf1d0d54)

Status / Services - Status Indicator

Use font awesome icons instead of text.
Universal recognition eliminates need of text translation.

(cherry picked from commit e7161dc3b62b306b57c8d094f93c2ec08c9e0af2)

Removed global variables used on the version 2.2

(cherry picked from commit d4af7f9e4a332278a80ba2a9c56df2064dc579d9)

Add the function gettext

(cherry picked from commit 8d0b16a11c6a2a61fe51507a9b43b3bcad3aab80)

Fix Captive Portal's MACs icons

Standardize pass/block icons with the rest of the system

(cherry picked from commit 96abde901f0c4e81d4cac0acd2361267e6ef1b0c)

Fix closing `tbody` tag in Captive Portal's MACs

(cherry picked from commit 22b50541377ec212d71e0686a0b6a20149b23a7c)

Fixed #6872 Restored missing proxy port setting

Reduce maximum length of string to gettext()

This limit is set at 4096 on PHP 5.6: http://lxr.php.net/xref/PHP_5_6/ext/gettext/gettext.c#139

Bug report on forum: https://forum.pfsense.org/index.php?topic=110088.0

(cherry picked from commit 95f46512d9410b38b23d7778cec0bf8610e448cf)