find_ip_interface() add IPv6 support
Add IPv6 support to diag_ipsec.php connect button
find_virtual_ip_alias() add IPv6 support
Add check_subnetsv6_overlap()
IPv6 subnet check
Update HTML boolean operator "nowrap"

The HTML boolean operator "nowrap" has been deprecated to a "style" and
it's "butt ugly", IMHO.

So, add a new class called "nowrap" to "all.css" and "wizard.css" and
start replacing "nowrap" with "class='nowrap'", if there is already a
class defined then just add, "class='whatever nowrap'".

Update "loader.js" and "bottom-loader.js" with proper CDATA sections.
Merge pull request #384 from bcyrill/ifip_v6

Add IPv6 support to diag_ipsec.php connect button
This message can be really spammy on a failure if you have multiple gateway groups. Disable e-mail notification of this message for now.
If the e-mail actually made it out, at least one of the gateways must still be up...
Update etc/inc/dyndns.class

Resolves #2677
Merge pull request #386 from bcyrill/patch-12

Update etc/inc/dyndns.class
Fix IPsec status when using interface macros (e.g. "LAN subnet") and handle matching better when IPs may not match up due to IPv6 formatting/compression.
Fix indent and whitespaces
Adjust backup settings to new captive portal zones
Adjust RRD captive portal graphs for CP zones

- Create RRD configs per zone
- Add tabs to see graphs per zone
- Migrate existing rrd files to default cpZone
- While I'm here, call unset() for $rrdcreate and $rrdupdatesh

Resolves #2655
Merge pull request #385 from ExolonDX/branch_01

Update HTML boolean operator "nowrap"
Update HTML in  "include" files

Udated the DOCTYPE to make it W3C standard/compliant.

Moved "sorttable.js", "ticker.js" and the "antiClickJack style" from
"fbegin.inc" and place them in "head.inc" (where they belong), this may
also help the Widescreen package to work.

Close BR, INPUT and IMG tags properly, update IMG tags with "alt" and
update TABLE tags with "summary".

Updated the SCRIPT and STYLE with proper CDATA sections.

Updated LINK with the correct types.
Avoid possible deadlock during voucher xmlrpc sync and correct url generation for xmlrpc
Correct URL creation for xmlrpc as well as some error checking
Revert "Correct URL creation for xmlrpc as well as some error checking"

This reverts commit 9ea2463a5b982dff170d7e081b896ca79de19ad7.
Actually let xmlrpc construct the url internally from the passed info it is doing same checks