tweak icons framework and header banner

lib/main.typ

@@ -3,6 +3,7 @@
 #import "./html_utils.typ": html_show
 #import "./summary.typ": summary, card-list
 #import "./rss.typ": rss
+#import "./icons.typ"
 
 
 /// Mail template function
@@ -31,8 +32,8 @@
   /// List of related sites for metadata
   me-links: (),
   //-- Body --
-  /// Home button, more or less expect an image in a link
-  home: none,
+  /// Array of element to add on the top left of the page
+  nav-elements: none,
   /// Navigation menu content, css style expect a list of links, but it can
   /// be anything
   menu: none,
@@ -61,10 +62,10 @@
       me-links: me-links
     )
     html_body(
-      home: home,
       logo: logo,
       header: header,
       footer: footer,
+      nav-elements: nav-elements,
       menu: menu,
       body
     )