Added Google Two Factor Authentication. Closes #326.

app/lang/pt-BR/forms.php

@@ -3,19 +3,21 @@
 return [
     // Setup form fields
     'setup' => [
-        'email'          => 'Email',
-        'username'       => 'Usuário',
-        'password'       => 'Senha',
-        'site_name'      => 'Nome do site',
-        'site_domain'    => 'Domínio do site',
-        'site_timezone'  => 'Select your timezone',
-        'site_locale'    => 'Select your language',
+        'email'            => 'Email',
+        'username'         => 'Usuário',
+        'password'         => 'Senha',
+        'site_name'        => 'Nome do site',
+        'site_domain'      => 'Domínio do site',
+        'site_timezone'    => 'Select your timezone',
+        'site_locale'      => 'Select your language',
+        'enable_google2fa' => 'Enable Google Two Factor Authentication',
     ],
 
     // Login form fields
     'login' => [
         'email'    => 'Email',
         'password' => 'Senha',
+        '2fauth'   => 'Authentication Code',
     ],
 
     // Incidents form fields
@@ -78,6 +80,9 @@ return [
         'password'     => 'Senha',
         'api-key'      => 'Chave da API',
         'api-key-help' => 'Regenerar sua chave de API irá revogar todos os aplicativos existentes.',
+        '2fa'          => [
+            'help' => 'Enabling two factor authentication increases security of your account. You will need to download <a href="https://support.google.com/accounts/answer/1066447?hl=en">Google Authenticator</a> or a similar app on to your mobile device. When you login you will be asked to provide a token generated by the app.',
+        ],
     ],
 
     // Buttons