Updated HttpConfig to use TLSv1 as Cipher List

- Updated PPHttpConfig.php with Cipher List
- Updated Lipp Samples to use proper namespaces. Fixes #156
- Few UI Fixes

lib/PayPal/Core/PPHttpConfig.php

@@ -26,7 +26,10 @@ class PPHttpConfig
         CURLOPT_USERAGENT => 'PayPal-PHP-SDK',
         CURLOPT_HTTPHEADER => array(),
         CURLOPT_SSL_VERIFYHOST => 2,
-        CURLOPT_SSL_VERIFYPEER => 1
+        CURLOPT_SSL_VERIFYPEER => 1,
+        CURLOPT_SSL_CIPHER_LIST => 'TLSv1'
+        //Allowing TLSv1 cipher list.
+        //Adding it like this for backward compatibility with older versions of curl
     );