Add new device email when user logs in

src/static/templates/email/new_device_logged_in.hbs

@@ -0,0 +1,14 @@
+New Device Logged In From {{device}}
+<!---------------->
+<html>
+<p>
+   Your account was just logged into from a new device.
+
+   Date: {{datetime}}
+   IP Address: {{ip}}
+   Device Type: {{device}}
+
+   You can deauthorize all devices that have access to your account from the
+    <a href="{{url}}">web vault</a> under Settings > My Account > Deauthorize Sessions.
+</p>
+</html>