Extend support for .ico files

Now we can parse image/x-icon tiddlers for display, and provide an
entry for them in the type dropdown.

core/docs/types/image_x-icon.tid

@@ -0,0 +1,3 @@
+title: $:/docs/types/image/x-icon
+description: ICO format icon file
+name: image/x-icon

core/modules/parsers/imageparser.js

@@ -38,6 +38,7 @@ exports["image/jpeg"] = ImageParser;
 exports["image/png"] = ImageParser;
 exports["image/gif"] = ImageParser;
 exports["application/pdf"] = ImageParser;
+exports["image/x-icon"] = ImageParser;
 
 })();
 

core/modules/widgets/edit.js

@@ -41,7 +41,8 @@ var editorTypeMappings = {
 	"image/jpg": "bitmap",
 	"image/jpeg": "bitmap",
 	"image/gif": "bitmap",
-	"image/png": "bitmap"
+	"image/png": "bitmap",
+	"image/x-icon": "bitmap"
 };
 
 /*