1.3.1

Bugfixes

[authentication] Fixes for Multi Factor Authentication (#3137)
[deployment] Missing zxing dependencies added to broker assembly (#3151)

---

Enhancements

[authentication] MFA QRCodeServlet removal (#3147)
[deployment] SslVerify property is not used and should be removed (#3139)
[documentation] Multi Factor Authentication user manual (#3132)
[documentation] Credentials documentation (#3141)