pfSense

Correct DPD syntax and values. Fixes #11196

IPsec P2 life_time changes. May help with issue #10176

• We currently only set life_time which isn't ideal
• Swanctl format wants rekey_time set, defaults to 1h (3600)
• Many users set P2 lifetime to 3600
• With rekey_time and life_time equal, rand_time is 0, so both always...

Correct IPsec secrets section ID type handling. Fixes #11193

Revise JSON data format when generating a list of states

Moved diag_dump_states logic to an include file for clarity

Revise diag_arp.php moving control lgic to an include file

Domeneshop DynDNS correct return code check. Fixes #11146

Secondary DDNS server entry for static DHCP mappings. Issue #10224

Namecheap DDNS error code fix. Issue #5308

Add product_label global variable

Introduce product_label global variable, by default with same value of
product_name. The idea is to make it easier for rebranded products to
change the name on all visual texts while internal structures are
preserved.

While here, remove deprecated $g['platform'] and also replace places...