GUACAMOLE-1364: Allow both traditional username/password and SSO.

extensions/guacamole-auth-sso/modules/guacamole-auth-sso-saml/src/main/resources/guac-manifest.json

@@ -9,6 +9,15 @@
         "org.apache.guacamole.auth.saml.SAMLAuthenticationProvider"
     ],
 
+    "css" : [
+        "styles/sso-providers.css"
+    ],
+
+    "html" : [
+        "html/sso-providers.html",
+        "html/sso-provider-saml.html"
+    ],
+
     "translations" : [
         "translations/ca.json",
         "translations/de.json",

extensions/guacamole-auth-sso/modules/guacamole-auth-sso-saml/src/main/resources/html/sso-provider-saml.html

@@ -0,0 +1,4 @@
+<meta name="after-children" content=".login-ui .sso-provider-list:last-child">
+<li class="sso-provider sso-provider-saml"><a href="api/ext/saml/login">{{
+    'LOGIN.NAME_IDP_SAML' | translate
+}}</a></li>