Returns times in seconds instead of converting before sending.

If we are returning a single string, concatenating values can be very redundant as IDs may be the same as `short_name`s and stop indexes would need to be parsed to be useful.

Should the tests be using the "HumanReadableIteration" results?

Refactor code around paths recording.
- Reduce flags and settings from peppering inner loops
- Consolidate regional / taui / single point recording
- Reduce code with "side effects" preferring methods that act on passed in data
- Modify single point path summaries to produce what the front-end will display.

Translate a path result to data usable by the client side.

- Remove the static initialize method from `PathResultsRecorder`
- Move the `summarize` method from `PathResult` -> `RegionalPathResultSummar`