Te idea is simple, start parsing rules in a uniform way, so we're eventually able to display and alter all auto generated rules.
Because of the large set of legacy code rules, we're going to migrate step by step, leaving the current setup intact.

o Don't look for templates in manufacturer directory
o Allow to use "/" component separator, it's safe
o Hook up the "template list" command

We fall back to the local authentication if not found.

PR: https://github.com/opnsense/plugins/issues/43

* system_console_configure() is really system_login_configure()+
* make a template for sudoers config setting
* move auth template generation to single spot

(pam) switch to pam, with the option to disable our pam helper and switch back to unix mode... for https://github.com/opnsense/core/issues/998

... and it may be that it never will...

(mvc) improve api errors for configuration issues (wrong/missing type) and remove unused return value

We have manifests for packages, no need to duplicate info
about sub-packages that aren't really packages.

Approved by: @adschellevis

PR: https://forum.opnsense.org/index.php?topic=3824

(hassync) trigger xmlrpc sync before service action, for https://github.com/opnsense/core/issues/1217

(mvc, migrations) remove the need for empty boilerplates by using BaseModelMigration when no custom migration is available for the current version.

(ipsec) remove ipsec_force_reload, replace with ipsec_configured_on_interface() to check if a tunnel is configured before reloading ipsec

(ipsec) remove failoverforcereload, when enabled it just calls ipsec_configure() twice, which doesn't look usefull