allow non-root paths for spec runner

The current implementation uses `getRelativeFileList` to set paths in spec runner HTML output.  The path for `context.temp` did not make use of this method.  Use cases requiring the spec runner be saved in a child under the application root (instead of directly within the root folder) fail to load resources from paths in a template making use of that value.

Now, the spec runner may be written to any path within the project and the include paths based on `context.temp` will return valid resource paths.