Changelog:
============
- Fix potential XSS vulnerability in browsable API.
- Revert "Ensure CursorPagination respects nulls in the ordering field".
- Use warnings rather than logging a warning for DecimalField.
- Remove unused code.
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>