Start client-side locale support

locale/en_US/mfa.locale.js

@@ -0,0 +1,23 @@
+module.exports = exports = {
+    challenge_prompt: 'Your account has multi-factor authentication enabled. Please enter the code generated by your authenticator app to continue.',
+    mfa_code: { one: 'MFA Code', many: 'MFA Codes' },
+    lost_device: 'Lost your MFA device?',
+    invalid_code: 'Uh, oh! It looks like that\'s not the right code. Please try again.',
+    success: 'Success! Redirecting...',
+
+    disable_prompt: `
+    This process will disable multi-factor authentication on your account.
+    <br><br>
+    For security reasons, this will sign you out of all devices. It will also deactivate any existing app passwords you have generated.
+    <br><br>
+    Are you sure you want to continue?
+    `,
+    disable: 'Disable MFA',
+    disable_success: 'MFA was successfully disabled. You\'ll now sign-in normally.',
+
+    recover_prompt: 'To recover access to your account, you can enter one of the generated MFA recovery codes:',
+    recovery_code: 'Recovery Code',
+    normal_code: 'Have a normal MFA code?',
+    recover_success: 'Success! There are only NUM_CODES recovery codes remaining. Let\'s get you on your way...',
+
+}