pfSense

Remove the DHCP static lease overlap cleanup and associated function and kill, as it can cause problems with failover scenarios.

Trying to submit a symlink as part of crash reports will cause a failed
submission. Remove symlinks first. Also properly set user agent while
here, consistent with others. Fix some style and whitespace too. Ticket

Fix #4640 IPsec Auto-exclude LAN address toggles

every time save is pressed.
Actually the GUI is displaying the opposite setting to what is in the config. When the user pressed save that opposite setting was saved, but then again it displays the opposite of the opposite...

Implement make bofre break feature avaliable on strongswan 5.3.0 useful for IKEv2. Fixes #4626

Make diag_smart back button look like other buttons

The back button here was just a piece of text with no nice formatting.
This change codes it as a button in the same way that "Cancel" buttons are done elsewhere. It makes the SMART Diag results page look a bit more consistent with the rest of the pfSense GUI.

Add support for EAP-RADIUS to IKEv2 Mobile Clients

Merge pull request #1601 from phil-davis/check-overlapping-subnets

Remove pre-check and post-check from Cache-Control

If both `post-check` and `pre-check` are specified and set to `0`, both
are entirely ignored:

http://blogs.msdn.com/b/ieinternals/archive/2009/07/20/using-post_2d00_check-and-pre_2d00_check-cache-directives.aspx

Combine Cache-Control header in one line

Sorted by RFC 2616:

Section 14.9.1 `no-cache`
Section 14.9.2 `no-store`
Section 14.9.4 `must-revalidate`

Combined into one line with IE's `pre-check` and `post-check`. However,
when both set to `0`, both are entirely ignored:...

Merge pull request #1609 from phil-davis/www-bits