Blender Git Loki

Bugfixes #5314 and #5424

- removed the "" from pulldown menu, and replaced with readable "or"
(makes it for translation systems easier to parse)
- the theme menu, area type chooseer menu, "Timeline" didnt draw in the
button due to bad pupmenu_col() code with using 'seperators'. Fixed it
by just adding another separator for now.

Both fixes reviewed and provided by Juho. Thanks!