fix email resend()

it was using old  System::getEmailSettings()  which was trying to find email config in settings table

src/bb-modules/Email/Service.php

@@ -304,8 +304,7 @@ class Service implements \Box\InjectionAwareInterface
 
         $this->_logEmailToDb($email); //Logging to DB
 
-        $systemService = $this->di['mod_service']('system');
-        $settings        = $systemService->getEmailSettings();
+        $settings      = $this->di['mod_config']('email');
         $transport       = $this->di['array_get']($settings, 'mailer', 'sendmail');
 
         if (APPLICATION_ENV == 'testing') {

src/bb-modules/System/Service.php

@@ -1538,30 +1538,6 @@ class Service
         return $this->di['db']->getAssoc($query);
     }
 
-    public function getEmailSettings()
-    {
-        $params = array(
-            'mailer',
-            'smtp_authentication',
-            'smtp_security',
-            'smtp_port',
-            'smtp_username',
-            'smtp_password',
-            'smtp_host',
-        );
-        $res    = $this->_getMultipleParams($params);
-
-        return array(
-            'mailer'              => $this->di['array_get']($res, 'mailer', 'sendmail'),
-            'smtp_authentication' => (isset($res['smtp_authentication']) && $res['smtp_authentication']) ? 'login' : NULL,
-            'smtp_host'           => $this->di['array_get']($res, 'smtp_host'),
-            'smtp_security'       => (isset($res['smtp_security']) && $res['smtp_security'] != 'no') ? $res['smtp_security'] : NULL,
-            'smtp_port'           => $this->di['array_get']($res, 'smtp_port'),
-            'smtp_username'       => $this->di['array_get']($res, 'smtp_username'),
-            'smtp_password'       => $this->di['array_get']($res, 'smtp_password'),
-        );
-    }
-
     public function getVersion()
     {
         return \Box_Version::VERSION;

tests/bb-modules/Email/ServiceTest.php

@@ -551,15 +551,12 @@ class ServiceTest extends \BBTestCase
             'smtp_password'       => NULL,
         );
 
-        $systemService = $this->getMockBuilder('\Box\Mod\System\Service')->setMethods(array('getEmailSettings'))->getMock();
-        $systemService->expects($this->atLeastOnce())
-            ->method('getEmailSettings')
-            ->will($this->returnValue($emailSettings));
-
         $di['db']          = $db;
         $di['mail']        = $mailMock;
-        $di['mod_service'] = $di->protect(function () use ($systemService) {
-            return $systemService;
+
+        $config = array();
+        $di['mod_config']  = $di->protect(function ($modName) use($config){
+            return $config;
         });
         $di['logger'] = $this->getMockBuilder('Box_Log')->getMock();
         $di['array_get'] = $di->protect(function (array $array, $key, $default = null) use ($di) {