adding selenium server pass throughs for W3C dialect of alert / window / cookie commands.

changing how W3C dialect is detected by checking if 'status' is sent in the new session response
switch to window in w3c passes in 'handle' variable instead of 'name'

Fixes #1242
Fixes #1241
Fixes #1240
Fixes #1238
Fixes #1237

Author: lukeis

src/main/java/org/openqa/selenium/WebDriver.java

@@ -238,7 +238,6 @@ interface Options {
     /**
      * @return the interface for managing the current window.
      */
-    @Beta
     Window window();
 
     /**
@@ -508,5 +507,10 @@ interface Window {
      * Maximizes the current window if it is not already maximized
      */
     void maximize();
+
+    /**
+     * Fullscreen the current window if it is not already fullscreen
+     */
+    void fullscreen();
   }
 }