Remove duplicate icon declarations and move Progress into Misc

iconset/iconAccessorSpec.properties

@@ -168,14 +168,9 @@ Window.Maximize                     = window/maximize.svg
 Window.Minimize                     = window/minimize.svg
 Window.Restore                      = window/restore.svg
 
-Progress.Pause                      = progress/pause.svg
-Progress.Pause|disabled             = progress/pauseDisabled.svg
-Progress.Play                       = progress/resume.svg
-Progress.Play|disabled              = progress/resumeDisabled.svg
-Progress.Step                       = progress/stepWorking.svg
-Progress.Step|passive               = progress/stepPassive.svg
-
 Misc.ColorWheel                     = menu/colorChooser.svg
 Misc.Palette                        = misc/palette.svg
 Misc.Palette|disabled               = misc/paletteDisabled.svg
 Misc.Sound                          = misc/sound.svg
+Misc.Progress                       = progress/stepWorking.svg
+Misc.Progress|passive               = progress/stepPassive.svg