Renaming Namespaces and Organizing Classes

- Updated OpenId classes to be in API namespace
- Updated PP Naming Convention to PayPal Naming Convention
- FormatConverter Class got its own namespace
- Handlers are grouped in Handler namespace
- Samples and Tests Updated Accordingly

sample/doc/lipp/ObtainUserConsent.html

@@ -2,11 +2,11 @@
 
 <span class="hljs-keyword">require</span> <span class="hljs-keyword">__DIR__</span> . <span class="hljs-string">'/../bootstrap.php'</span>;
 
-<span class="hljs-keyword">use</span> <span class="hljs-title">PayPal</span>\<span class="hljs-title">Auth</span>\<span class="hljs-title">Openid</span>\<span class="hljs-title">PPOpenIdSession</span>;
+<span class="hljs-keyword">use</span> <span class="hljs-title">PayPal</span>\<span class="hljs-title">Api</span>\<span class="hljs-title">OpenIdSession</span>;
 
 <span class="hljs-variable">$baseUrl</span> = getBaseUrl() . <span class="hljs-string">'/UserConsentRedirect.php?success=true'</span>;</div></div></div><div class="segment"><div class="comments "><div class="wrapper"><h3 id="get-user-consent-url">Get User Consent URL</h3>
 <p>The clientId is stored in the bootstrap file</p></div></div><div class="code"><div class="wrapper"><span class="hljs-comment">//Get Authorization URL returns the redirect URL that could be used to get user's consent</span>
-<span class="hljs-variable">$redirectUrl</span> = PPOpenIdSession::getAuthorizationUrl(
+<span class="hljs-variable">$redirectUrl</span> = OpenIdSession::getAuthorizationUrl(
     <span class="hljs-variable">$baseUrl</span>,
     <span class="hljs-keyword">array</span>(<span class="hljs-string">'profile'</span>, <span class="hljs-string">'email'</span>, <span class="hljs-string">'phone'</span>),
     <span class="hljs-keyword">null</span>,