add "random" endpoint that just redirects you to a random node.

no hash required.

@@ -58,0 +60,4 @@
+fn handle_random() {
+  let db_path = "members.db"
+  use conn <- sqlight.with_connection(db_path)
+  let next =

@@ -58,0 +66,4 @@
+      on: conn,
+      expecting: dynamic.decode1(Row, dynamic.element(0, dynamic.string)),
+    )
+  case next {

@@ -58,0 +67,4 @@
+      expecting: dynamic.decode1(Row, dynamic.element(0, dynamic.string)),
+    )
+  case next {
+    Ok([Row(next_link)]) -> wisp.redirect(next_link)