Position: Use absolute positioning when getting scrollbar width to avoid reflows of user content. Fixes #9291 - Position - $.position.scrollbarWidth detection causes layout issues.
Revert "Position: Use absolute positioning when getting scrollbar width to avoid reflows of user content. Fixes #9291 - Position - $.position.scrollbarWidth detection causes layout issues."

This reverts commit 1d3b8ff78eaa3d64a839ba34af34d1e8b24f82af.
Position: Use absolute positioning when getting scrollbar width to avoid reflows of user content. Fixes #9291 - Position - $.position.scrollbarWidth detection causes layout issues.
Sortable demo (portlets): Cleanup.
Datepicker i18n: Updated Spanish and French locales. Fixes #9289 - Datepicker: Incorrect capitalisation for French and Spanish.