Build: Don't use .min.js extension for individual source files

We don't actually use these files for anything other than size comparisons,
but having the .min.js extension means that AMD is broken.

Note: If you're using AMD with the minified files, just run a build instead.

Fixes #10674
Closes gh-1466

Gruntfile.js

@@ -79,7 +79,7 @@ var
 	component = grunt.option( "component" ) || "**";
 
 function mapMinFile( file ) {
-	return "dist/" + file.replace( /\.js$/, ".min.js" ).replace( /ui\//, "minified/" );
+	return "dist/" + file.replace( /ui\//, "minified/" );
 }
 
 function expandFiles( files ) {