Re-activating button in case of failure

parts/static/script.js

@@ -263,6 +263,8 @@ function octopartFetch(){
 			$('#description-input').val('');
 			$('#description-input').attr('placeholder', json['result']);
 		}
+  	}).fail(function() {
+    	$('#magic-autofill-button').removeAttr('disabled');
     });
 }