Fix LDAP Extended Query example.

The old one was not valid LDAP filter syntax.
Improve Authentication Containers examples.

* The first example was wrong (cf. ldap_backed() in auth.inc which
  looks for a DC= part to determine a full DN.
* The second example now show the realtive DNs.
Don't gettext() the example strings.

They must not be translated.
Gateway Monitor Advanced Settings

Exposes 3 additional apinger configuration options in the gateway monitor advanced section which can either be set manually, calculated based on interval, or use the hard coded defaults.
	1) Avg Delay Samples
	2) Avg Loss Samples
	3) Avg Loss Delay Samples

The current hard coded defaults are okay for a short interval such as the 1 second default.  But do not work well when a longer interval is required.
captive portal, don't generate rules for disabled portal
Gateway Monitor Advanced Settings

Recommended changes made to calculated value input behavior.
Restrict interval to integer of 1 or greater.
Enhance interface gateway data entry descriptions
Enhance interface gateway data entry descriptions
Return all when all or remote is selected on Traffic Graph
Make Local the default filter for Traffic Graph

to preserve the old behavior, that it shows "Local" traffic when first started.
Make Local the default filter for Traffic Graph

to preserve the previous standard behavior that shows "Local" when Traffic Graph starts.
Merge pull request #906 from phil-davis/master

Return and filter appropriately when all or remote is selected on Traffic Graph
Fix for #3416

Correct javascript error which prevents PPP/PPPoE per-link settings from
being displayed (bandwidth, MTU, MRU, MRRU).
Merge pull request #911 from candlerb/candlerb/3416

Fix for #3416
Fixup pkg_nochecksig option
Declare $config global so we can test the pkg_nochecksig option
Check for tmp captiveportal dir before making it

In forum: https://forum.pfsense.org/index.php/topic,72483.0.html
Warning: mkdir(): File exists in /etc/inc/system.inc on line 878
Not sure if you would rather call safe_mkdir here?
Merge pull request #912 from phil-davis/master

Check for tmp captiveportal dir before making it
Make improvement to the check
Catch a validation issue reported on the mailing list thread: IPv6 address data validation from: Brian Candler. It prevents putting a subnet in the address field since it then breaks the whole filter generation process