(legacy) system_authservers.php, empty server name not allowed. closes https://github.com/opnsense/core/issues/731

(captive portal) fix multiple voucher generation, closes https://github.com/opnsense/core/issues/728

Closes #707
Closes #732

Firewall log not dispalaying intentionally logged IGMP packets

(captive portal) change voucher download filename to match groupname, original idea from @DokuKaefer

translation fix in thermal_sensors.widget.php

The log filter were dropped because the packets did not get source and destination set.
Signed-off-by: Isaac (.ike) Levy <ike@blackskyresearch.net>

Changes are not unknown, the config can be diff'ed.

(IDS) add ssl fingerprint blacklist and other abuse lists to standard. courtesy of abuse.ch (https://www.abuse.ch/)

- change api method listInstallableRuleset to listRulesets
- add api method getRuleset
- add api method setRuleset
- change api method toggleInstalledRuleset to toggleRuleset
- fix reload action on multiselect

just a pattern that returns from time to time, encapsulated into a new method so we can remove some code.

PR: https://forum.opnsense.org/index.php?topic=2090

o $g['theme'] usage converted
o $g['language'] usage zapped
o globals.inc removed

"device polling" changes also require a reboot

The changes won't happen until the interface is re-configured, just like for the other settings.