Updated Logger class to not register error handlers if it's in a testing environment

src/Socialbox/Classes/Logger.php

@@ -15,8 +15,13 @@
             if(self::$logger === null)
             {
                 self::$logger = new \LogLib2\Logger(Configuration::getInstanceConfiguration()->getName());
+
+                // Don't register handlers if we are testing. This conflicts with PHPUnit.
+                if(!defined('SB_TEST'))
+                {
                     \LogLib2\Logger::registerHandlers();
                 }
+            }
 
             return self::$logger;
         }