datasets now redirect to their details pages.

also implemented 'button' look and feel for the datasets

src/main/resources/static/main.css

@@ -109,6 +109,11 @@ header {
     align-items: center;
     justify-content: space-between;
     box-sizing: border-box;
+    cursor: pointer;
+}
+
+.dataset:hover {
+    filter: brightness(1.2);
 }
 
 .upvote {