Gravity: Add value escaping method for float values.
Halo: Split request parser test trait in static and dynamic parts.
Corona: Adjust trait usage in the request parser test.
Shadow: Adjust trait usage in the request parser test.
Corona: Add basic RequestParser class.

This class only reads the default values from config files and
is as such as close to a "Null Request Parser" as we can get.
Feedback: Fix timestamped message composition.

Timestamp ended up after the controller/method combo. That's rather
uncommon to see in log files so fix the timestamp to appear before
the controller/method combo.
Gravity: Wrapper for the mkdir function