Fix building tracker on initial setup

out/static/lookup-rank.js

@@ -1,5 +1,5 @@
 function lookup_rank_js(bundle_id) {
-  loadJSON('/stats/rank.json', function(response) {
+  loadJSON('/results/rank.json', function(response) {
     let json = JSON.parse(response);
     if (!json) { return; }
     let rank = json[bundle_id];

src/download_tracker.py

@@ -22,6 +22,8 @@ def enum_local(list_name):
 def is_tracker(domain):
     global known_trackers
     if known_trackers is None:
+        if not mylib.file_exists(fname_tracker('all.txt')):
+            process()
         known_trackers = list(enum_local('all.txt'))
     return mylib.bintree_lookup(known_trackers, domain[::-1])