Add in @Overrides across the board, clean up the comments around them some, and remove

unneeded imports.
I've got partially completed patches for narya & vilya, too, but nenya was the 
only one that wound up in a decent state after a friday evening puttering at it,
killing time waiting on other things to finish.


git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@572 ed5b42cb-e716-0410-a449-f6a68f950b19

src/java/com/threerings/media/SafeScrollPane.java

@@ -51,7 +51,7 @@ public class SafeScrollPane extends JScrollPane
         }
     }
 
-    // documentation inherited
+    @Override
     public Dimension getPreferredSize ()
     {
         Dimension d = super.getPreferredSize();
@@ -66,9 +66,11 @@ public class SafeScrollPane extends JScrollPane
         return d;
     }
 
+    @Override
     protected JViewport createViewport ()
     {
         JViewport vp = new JViewport() {
+            @Override
             public void setViewPosition (Point p) {
                 super.setViewPosition(p);
                 // simple scroll mode results in setViewPosition causing