pfSense

Fix checkbox always being unchecked on page load

For the GUI option introduced in #15430

Encode dir names in browser.php. Fixes #15525

Automatically use floating states for IPsec rules. Fix #15430

Avoid configuration loop with LAGG interfaces. Fix #14083

The fix to #9453 introduced a loop when configuring LAGG interfaces.
This happens when interface_lagg_configure() ultimately calls
set_interface_mtu() which also calls interface_lagg_configure(). Since...

Default to an empty array for functions expecting a countable value

Do this for foreach() and count().

Correct default for 'system/acb' in write_config() to empty array instead of null

Update all direct config access with accessor functions

Refactor config upgrade to use config accessors

Use config accessors in traffic shaper functions

Use config accessors in certificate functions