fix saveAs>overwrite dialog

package.json

@@ -108,7 +108,7 @@
         "c9.ide.run": "#485f06bd22",
         "c9.ide.run.build": "#0598fff697",
         "c9.ide.run.debug.xdebug": "#9956689819",
-        "c9.ide.save": "#86f0f38160",
+        "c9.ide.save": "#4cda35bfdb",
         "c9.ide.scm": "#dc87315012",
         "c9.ide.terminal.monitor": "#1a4092ede2",
         "c9.ide.test": "#a282ec1619",