breaking apart EditorToolbars.css into 3 files for performance reasons.

r=manske, sr=hewitt, a=asa #97487

suite/debugQA/content/debugQATextEditorShell.xul

@@ -24,6 +24,9 @@
   -->
 
 <?xml-stylesheet href="chrome://editor/skin/editor.css" type="text/css"?> 
+<?xml-stylesheet href="chrome://editor/skin/textEditor.css" type="text/css"?> 
+
+<?xml-stylesheet href="chrome://editor/skin/editorPrimaryToolbar.css" type="text/css"?> 
 <?xul-overlay href="chrome://editor/content/editorOverlay.xul"?>
 <?xul-overlay href="chrome://global/content/globalOverlay.xul"?>
 <?xul-overlay href="chrome://global/content/charsetOverlay.xul"?>