Multiple user testing driven fixes for methods and data sources:
- Added previewing of parent schema fields.
- Added preview of the generated data configuration input form.
- Various updates in text.
- Removed unused sampling fields, there is only periodic sampling now (custom sampling can be implemented in custom processing scripts).
- Added an effect upon selection of a data source type as requested from user testing (adds text saying it was selected and to finish configuration on the next step).

Fixed issue with ReDBox where dataset records were being ingested before the project records due to larger numbers (eg. 345) alphabetically sorting early than smaller numbers (eg. 9) by adding 0 padding.

Added scripts/controllers for converting a MethodSchema into an input form (inheritance is supported).