Improve welcome page

* Improve code readability of calendar details
* Add link to AE Dev discord in useful links
* Add link to github at the bottom

core/static/core/colors.scss

@@ -26,6 +26,7 @@ $faceblue: hsl(221, 44%, 41%);
 $twitblue: hsl(206, 82%, 63%);
 $discordblurple: #7289da;
 $instagradient: radial-gradient(circle at 30% 107%, #fdf497 0%, #fdf497 5%, #fd5949 45%, #d6249f 60%, #285AEB 90%);
+$githubblack: rgb(22, 22, 20);
 
 $shadow-color: rgb(223, 223, 223);
 

core/static/core/style.scss

@@ -822,6 +822,10 @@ footer {
     margin-top: 3px;
     color: rgba(0, 0, 0, 0.3);
   }
+
+  .fa-github {
+    color: $githubblack;
+  }
 }