This is part of #431, right fix is to use <button/> instead.  We
don't want to extend the code to fix this, it'll introduce more
bugs and strangeness later.  Still a lot to do there, any help is
welcome, the conversion is pretty simple.

(cherry picked from commit e821b018)

(cherry picked from commit 67ecda13)

(cherry picked from commit 187d7ee0)

(legacy) lock portnumbers on protocols other then tcp/udp, closes https://github.com/opnsense/core/issues/542

(cherry picked from commit 1400ea76)

(legacy) Warning: Illegal string offset 'wan' in /usr/local/www/services_dhcpv6.php on line 462 Warning

(cherry picked from commit 4e8484a9)

examples:
display logged in user menu : /api/core/menu/tree
search items (visitable by logged in user): /api/core/menu/search/?q=dhcpv6

(cherry picked from commit faa58ad5)

(cherry picked from commit 8ed4bd88)

(cherry picked from commit e96aa187)

(cherry picked from commit e357d532)

(cherry picked from commit ea42f12f)

(trafficshaper) add match tcp ACK/non-ACK selection, closes https://github.com/opnsense/core/issues/528

(cherry picked from commit edbac06d)

(cherry picked from commit 454e8b3c)

(legacy) add symbol to show rule direction on floating rule, closes https://github.com/opnsense/core/issues/533

(cherry picked from commit 168f87e5)

(legacy) Unable to use commas in advanced DHCP client options https://github.com/opnsense/core/issues/530

(cherry picked from commit dbaf457b)

(cherry picked from commit a8b49250)

(cherry picked from commit 6ba91d07)

(cherry picked from commit 616436a6)

(cherry picked from commit 8be37cbe)

(cherry picked from commit c4beabc6)

(cherry picked from commit 6ea14da0)

(cherry picked from commit 45d10be8)

(cherry picked from commit 1120bbb8)

(cherry picked from commit b57cdb64)

(cherry picked from commit 025c096b)

(legacy) add x509_extensions selection to cert_created, related to https://github.com/opnsense/core/issues/81

(cherry picked from commit 9d6473f5)

(legacy) remoev duplicate cert code from usermanager (use redirect instead), closes https://github.com/opnsense/core/issues/59

(cherry picked from commit a8d218d1)

(cherry picked from commit 44a02f94)

(cherry picked from commit 45a82edb)

(cherry picked from commit 9b432e83)

(cherry picked from commit 1f459153)

(cherry picked from commit 0987f259)

(cherry picked from commit 94e5cd9f)

(cherry picked from commit 44d79821)

(cherry picked from commit c0e5cf12)

(cherry picked from commit cd09541e)

(cherry picked from commit 94621944)

(cherry picked from commit ab3beeb0)