Added "new" indicator to sidebar

Update sidebar.yml, commons.yml, and 4 more files...

data/sidebar.yml

@@ -2,6 +2,7 @@
   abs_href: "/"
   icon: fad fa-home
   active_id: home
+  has_new_until_utc: 0
 
 -
 
@@ -9,6 +10,7 @@
   abs_href: "/articles/"
   icon: fad fa-newspaper
   active_id: articles
+  has_new_until_utc: 0
 
 -
 
@@ -16,31 +18,37 @@
   abs_href: "/content/?tags=application;web"
   icon: fad fa-browser
   active_id: application
+  has_new_until_utc: 0
 
 - title_key: text.libraries
   abs_href: "/content/?tags=library"
   icon: fad fa-puzzle-piece
   active_id: library
+  has_new_until_utc: 0
 
 - title_key: text.electronics
   abs_href: "/content/?tags=electronic"
   icon: fad fa-microchip
   active_id: electronic
+  has_new_until_utc: 0
 
 - title_key: text.experiments
   abs_href: "/content/?tags=experiments"
   icon: fad fa-flask-vial
   active_id: electronic
+  has_new_until_utc: 0
 
 - title_key: text.tools
   abs_href: "/tools"
   icon: fad fa-toolbox
   active_id: tools
+  has_new_until_utc: 0
 
 - title_key: text.downloads
   raw_href: "https://files.nibblepoker.lu/"
   icon: fad fa-download
   active_id: ""
+  has_new_until_utc: 1760986472
 
 -
 
@@ -48,13 +56,16 @@
   abs_href: "/about"
   icon: fad fa-user
   active_id: about
+  has_new_until_utc: 0
 
 - title_key: text.contact
   abs_href: "/contact"
   icon: fad fa-mailbox
   active_id: ""
+  has_new_until_utc: 0
 
 - title_key: text.links
   abs_href: "/links"
   icon: fad fa-link
   active_id: links
+  has_new_until_utc: 0