[#1100] Restore Tim's changes from r65 that were removed with the TinyMCE...

[#1100] Restore Tim's changes from r65 that were removed with the TinyMCE upgrade.  Also include UNL Readme file

README-UNL.txt

+UNL Modifications to Core (Marked with "Start UNL Change"):
+----------------
+
+Both image.js files (in plugins/advimage and themes) have been modified to not autofill image width and height.
+----------------
\ No newline at end of file

plugins/advimage/js/image.js

@@ -314,8 +314,13 @@ var ImageDialog = {
 		var f = document.forms[0];
 
 		if (!st) {
-			f.elements.width.value = img.width;
-			f.elements.height.value = img.height;
+			// Start UNL Change!
+			
+			// By default, we don't want width and height specified.
+			//f.elements.width.value = img.width;
+			//f.elements.height.value = img.height;
+			
+			// END UNL Change!
 		}
 
 		this.preloadImg = img;

themes/advanced/js/image.js

@@ -230,6 +230,11 @@ var ImageDialog = {
 	updateImageData : function() {
 		var f = document.forms[0], t = ImageDialog;
 		
+		// Start UNL Change!
+		// By default, we don't want width and height specified.
+		return;
+		// End UNL Change!
+		
 		if (f.width.value == "")
 			f.width.value = t.preloadImg.width;