prod_check 6.x-1.3

Bugfixes:

• Settings page label fix + extended cache message with Varnish info.
• #1694064: PHP Fatal error: Call to undefined function _prod_check__prod_check_error_reporting()
• Additional check on the result of the checks to prevent array_merge() problems.
• Removed prod_mon and perf_data from the functions array for drush.
• Fixed PHP Warning: Invalid argument supplied for foreach() in nagios_status_page()
• #1673276: _prod_check_anonymous_rights() false positive on "view uploaded files" permission

New features:

• #1672280: Add additional check on 'webform_default_from_address'
• #1671244: Create a way to 'switch a site to production mode'
• #1710136: Default contact form mail check