changed order of config lock check on shutdown, if some (custom) scripts waits to long the webui might still trash the config

uses a more standard approach to startup daemons via the rc.d system.

To enable, place a file for your service in /etc/rc.conf.d/ and set the enable variable to YES ( for example squid_enable=YES )

Packages are not part of the base so they stay the same bricking
the installation completely.  If you need to pull off such a stunt,
please use the install media plus config importer--it's cleaner.

issue with handling sequential arrays and gaps between indexes, fix for https://github.com/opnsense/core/issues/118

validate fromArray in config class to ignore empty tags. If for some strange reason the frontend code drops empty tags, we need to ignore them.

Related to https://github.com/opnsense/core/issues/116

fix for https://github.com/opnsense/core/issues/115 , the process flow remains messy, but shouldn't flush the config data anymore

Even though the webgui is restarted selectively, the other function
runs the complete captiveportal reconfigure and restarts all webguis
again.  I am suspecting this prevents the reload from working properly.

Small whitespace cleanups and style on top.