Structures table

References #132 (closed)

components/Nav/Navbar.vue

@@ -28,6 +28,8 @@ const sections = ref([
   },
   { id: "wiki", label: "Wiki", to: '/', },
   { id: "refseq", label: "REFSEQ", to: '/refseq/' },
+  { id: "structure", label: "Structures", to: '/predicted-structure/' },
+
   { id: "help", label: "Help", to: '/help/' },
 ]);