Return the saved server url of the current realm

Author: kunall17

app/src/main/java/com/zulip/android/ZulipApp.java

@@ -143,10 +143,10 @@ public void clearConnectionState() {
      * @return either the production or staging server's URI
      */
     public String getServerURI() {
-        if (getEmail().equals("[email protected]")) {
-            return "http://10.0.2.2:9991/api/";
-        }
-        return "https://api.zulip.com/";
+//        if (getEmail().equals("[email protected]")) {
+//            return "http://10.0.2.2:9991/api/";
+//        }
+        return settings.getString("server_url", "http://10.0.2.2:9991/api/");
     }
 
     public String getApiKey() {