Merged in luisfernandosl/processmaker/BUG-357 (pull request #851)

BUG 357 "PHP Notice en pm3." SOLVED

framework/src/Maveriks/WebApplication.php

@@ -112,7 +112,7 @@ class WebApplication
             list($this->requestUri,) = explode('?', $this->requestUri);
             $uriParts = explode('/', $this->requestUri);
 
-            if ($uriParts[2] == 'oauth2') {
+            if (isset($uriParts[2]) && $uriParts[2] == "oauth2") {
                 return self::RUNNING_OAUTH2;
             } else {
                 return self::RUNNING_WORKFLOW;