added subtle glowing css animation to unread notification icon

public/css/style.less

@@ -444,14 +444,33 @@ body .navbar .nodebb-inline-block {
   padding-bottom:20px;
 }
 
+
 .dropdown-toggle {
 	i {
 		font-size: 12px;
 
+		@-webkit-keyframes glow
+		{
+			from {text-shadow: 0 0 5px #aaf, 0 0 5px #aaf, 0 0 5px #aaf;}
+			50% {text-shadow: 0 0 10px #aaf, 0 0 10px #aaf, 0 0 10px #aaf;}
+			to {text-shadow: 0 0 5px #aaf, 0 0 5px #aaf, 0 0 5px #aaf;}
+		}
+		@keyframes glow
+		{
+			from {text-shadow: 0 0 5px #aaf, 0 0 5px #aaf, 0 0 5px #aaf;}
+			50% {text-shadow: 0 0 10px #aaf, 0 0 10px #aaf, 0 0 10px #aaf;}
+			to {text-shadow: 0 0 5px #aaf, 0 0 5px #aaf, 0 0 5px #aaf;}
+		}
+
+
 		&.active {
 			color: #558;
+			
 			text-shadow: 0 0 1em #aaf, 0 0 1em #aaf, 0 0 1em #aaf;
+			-webkit-animation:glow 1.5s infinite linear;
+				    animation:glow 1.5s infinite linear;
 		}
+
 	}
 }