Add project github page link

Author: tchapi

public/css/style.css

@@ -60,3 +60,15 @@ body {
 .popover .popover-body {
     user-select: text;
 }
+
+/* Github link icon */
+.github-link {
+    background-image: url("/images/github-mark.png");
+    background-repeat: no-repeat;
+    background-size: 23px;
+    height: 23px;
+    width: 23px;
+}
+[data-bs-theme=dark] .github-link {
+    background-image: url("/images/github-mark-white.png");
+}

templates/dashboard.html.twig

@@ -38,7 +38,10 @@
     <h3 class="mb-3 mt-4 environment">{{ "dashboard.env"|trans }}</h3>
 
     <ul class="list-group">
-      <li class="list-group-item list-group-item-primary">{{ "dashboard.version"|trans }} : <code>{{ version }}</code> (SabreDAV <code>{{ sabredav_version }}</code>)</li>
+      <li class="list-group-item list-group-item-primary d-flex justify-content-between">
+        <span>{{ "dashboard.version"|trans }} : <code>{{ version }}</code> (SabreDAV <code>{{ sabredav_version }}</code>)</span>
+        <a class="github-link" href="https://github.com/tchapi/davis" data-bs-toggle="popover" data-bs-trigger="hover" data-bs-content="Project Github page" data-bs-placement="bottom"></a>
+      </li>
       <li class="list-group-item list-group-item-secondary">{{ "dashboard.auth"|trans }} : <code>{{ authMethod }}</code> ({{ "dashboard.auth_realm"|trans }}: <code>{{ authRealm }}</code>)</li>
       <li class="list-group-item list-group-item-secondary">{{ "dashboard.invite_from_address"|trans }} : <code>{{ invite_from_address|default('Not set') }}</code></li>
       <li class="list-group-item list-group-item-secondary d-flex justify-content-between align-items-center ">