Update:Abs icon font and navbar to use icons

assets/absicons.css

@@ -13,7 +13,6 @@
 .abs-icons {
   /* use !important to prevent issues with browser extensions that change fonts */
   font-family: 'absicons' !important;
-  speak: never;
   font-style: normal;
   font-weight: normal;
   font-variant: normal;
@@ -25,6 +24,18 @@
   -moz-osx-font-smoothing: grayscale;
 }
 
+.icon-list:before {
+  content: "\e907";
+}
+
+.icon-home:before {
+  content: "\e909";
+}
+
+.icon-authors:before {
+  content: "\e90a";
+}
+
 .icon-books-1:before {
   content: "\e905";
 }
@@ -53,6 +64,10 @@
   content: "\e901";
 }
 
+.icon-columns:before {
+  content: "\e90b";
+}
+
 .icon-headphones:before {
   content: "\e910";
 }