StudioPress Genesis Framework 3.6.0

### Added
- Add a `genesis_get_config()` function, to locate and load config files from Genesis and a child theme.
- Add a new "onboarding" feature that allows users to import homepage demo content in WordPress 5.0.
- Add a new function that allows you to get an author box by specified user.

### Changed
- Improved/clarified the labels on settings/customizer pages.
- Changed references of "- None -" to "None" in forms, for better accessibility.

- Fixed an issue with the search form, where some elements were missing attributes, or had the wrong attributes.

- Fixed issue with filtered content being passed to `wp_kses_post()`.
- Fixed issue with the `genesis_search_form()` function returning nothing if used directly.