Allow SAML authentication provider to be named

Using `CMD_SAML_PROVIDERNAME` and the respective auth provider objects
in the configuration structures.

Signed-off-by: Moritz Schlarb <schlarbm@uni-mainz.de>

public/docs/release-notes.md

@@ -8,6 +8,7 @@
 ### Enhancements
 - Libravatar avatars render as ident-icons when no avatar image was uploaded to Libravatar or Gravatar
 - Add database connection error message to log output
+- Allow SAML authentication provider to be named
 
 ## <i class="fa fa-tag"></i> 1.9.2 <i class="fa fa-calendar-o"></i> 2021-12-03
 

public/views/shared/signin-modal.ejs

@@ -45,7 +45,7 @@
                 <% } %>
                 <% if (authProviders.saml) { %>
                 <a href="<%- serverURL %>/auth/saml" class="btn btn-lg btn-block btn-social btn-success">
-                    <i class="fa fa-users"></i> <%= __('Sign in via %s', 'SAML') %>
+                    <i class="fa fa-users"></i> <%= __('Sign in via %s', authProviders.samlProviderName || 'SAML') %>
                 </a>
                 <% } %>
                 <% if (authProviders.oauth2) { %>