Palettes Dialog and Palette Editor: Update to 2.99
- Remove non-existing "Save" and "Revert" Palette Editor bottom panel buttons. According to https://gitlab.gnome.org/GNOME/gimp/-/commits/master/app/actions/palette-editor-actions.c they have never existed.
- Clarify that "accessible by right-clicking in the palette display area" only works when actually clicking on a color and not the surrounding empty area.
- Rephrase "Offset" section for clarity.
- Rephrase "Ascending" section as it's a checkbox now and not a dropdown.
- Correct link to Palette Folders section in Preferences.
- Remove duplicated description of "Edit Color" option.
- Fix capitalization of "Channel to Sort" as in UI.
- Fix "Untitled " whitespace typo.
Edited by Andre Klapper