added @webref tags to PVector and PFont at the class level. Now writing out as expected. Updated index template with newlines after category headings. RefBuild currently not calling php scripts (commented out during dev).

core/src/processing/core/PFont.java

@@ -53,6 +53,7 @@ import java.util.Set;
  *
  *   ^^^^^^^^^^^^^^ setWidth (width displaced by char)
  * </PRE>
+ * @webref typography
  */
 public class PFont implements PConstants {
 

core/src/processing/core/PVector.java

@@ -41,6 +41,7 @@ import processing.core.PConstants;
  * new PVector object is not created with each operation.
  * <p>
  * Initially based on the Vector3D class by <a href="http://www.shiffman.net">Dan Shiffman</a>.
+ * @webref math
  */
 public class PVector implements Serializable {