o polling is going away
o idiomaitic way to enable/disable arp handling
o where does ip version prefer really fit in?
o unhide checkbox captions, as redundant as they may seem

(legacy) cleanup and validate url alias download, closes https://github.com/opnsense/core/issues/877

Simple names to complete drop-down

Signed-off-by: Isaac (.ike) Levy <ike@blackskyresearch.net>

Taken from: https://translate.opnsense.org/

support multiple values in CertificateField

(captive portal vouchers) missing busyTimeout (crashreport, PHP Warning:  SQLite3Stmt::execute(): Unable to execute statement: database is locked in /usr/local/opnsense/mvc/app/library/OPNsense/Auth/Voucher.php on line 120)