Use django-analytical settings only if the required settings exist.
Use django-analytical settings only if the required settings exist.

This is a workaround for development environments where these values
might not be configured. The 'parse_if' template tag is used because
django-analytical enforces that the setting value exists and is in the
correct format when the tag is parsed.

PrecisionMojo/pm-www,PrecisionMojo/pm-www