Put ribbons in the FX category so they can be created from the editor.

Templates/Empty/game/art/ribbons/ribbons.cs

@@ -41,4 +41,6 @@ datablock RibbonData(BasicRibbon)
    fadeAwayStep = 0.1;
    UseFadeOut = true;
    RibbonMaterial = BasicRibbonMat;
+
+   category = "FX";
 };

Templates/Full/game/art/ribbons/ribbons.cs

@@ -41,6 +41,8 @@ datablock RibbonData(BasicRibbon)
    fadeAwayStep = 0.1;
    UseFadeOut = true;
    RibbonMaterial = BasicRibbonMat;
+
+   category = "FX";
 };
 
 datablock RibbonData(TexturedRibbon)
@@ -60,4 +62,6 @@ datablock RibbonData(TexturedRibbon)
    tileScale = 1;
    fixedTexCoords = true;
    TexcoordsRelativeToDistance = true;
+
+   category = "FX";
 };