Options: fail_silently really fails silently when loading components
Options: set options debugging with environment variable
Options: Finalize actual value, not default value

This also fixes some extraneous calls in the option parsing loop.
reports: set DJANGO_SETTINGS_MODULE in wsgi script
DBSettings: Set config options at the module level

Some bits of Django appear to query the options directly from the
module, even if django.conf.settings.configure() has been called
Options: finalize ConfigFileActions

This ensures that /etc/bcfg2-web.conf gets read, even if the
--web-config for [reporting].config options are not given