fix: paginate weinfo times and read min deposit from ranking_info

- weinfo.html now pages times with the API's zero-based page offset instead of block heights\n- bal.js renders page metadata and hides dead next links on the last page\n- index.html and terms.html read amount from /ranking_info/{chain}

index.html

@@ -712,8 +712,9 @@ async function fetchData() {
 
 async function fetchMinAmount() {
   const chain = getChain();
-  try {
-    const r = await fetch('/min_deposit/' + chain);
+  try {
+    const r = await fetch('/ranking_info/' + chain);
+    const data = await r.json();
     const val = parseInt(data.amount, 10);
     if (isNaN(val)) throw new Error('invalid');
     minAmount = val;