Allow specifying enabled/disabled tags in config file

[mstemm]

As of #206, you can tag falco rules and enable/disable them via -t/-T. We should probably have a way to enable/disable rules in the config file so it's still possible to run falco as a daemon without changing the init.d files.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.