major theme updates, moving theme out of Mode, pieces in place for dynamic updates

java/src/processing/mode/java/ASTViewer.java

@@ -50,7 +50,7 @@ class ASTViewer {
         return super.convertValueToText(value, selected, expanded, leaf, row, hasFocus);
       }
     };
-    tree.setCellRenderer(new ZoomTreeCellRenderer(editor.getMode()));
+    tree.setCellRenderer(new ZoomTreeCellRenderer());
     window.addComponentListener(new ComponentAdapter() {
       @Override
       public void componentHidden(ComponentEvent e) {

java/src/processing/mode/java/ShowUsage.java

@@ -82,7 +82,7 @@ class ShowUsage {
       JScrollPane sp2 = new JScrollPane();
       tree = new JTree();
       ZoomTreeCellRenderer renderer =
-        new ZoomTreeCellRenderer(editor.getMode());
+        new ZoomTreeCellRenderer();
       tree.setCellRenderer(renderer);
       renderer.setLeafIcon(null);
       renderer.setClosedIcon(null);