Access call in channelmapper

I was able to get this to work with my old build of the wiki, just by using this sync function:

```javascript
function channelMap(doc) {
  var ch = doc.wiki_id;
  if (ch) {
    sync("ch-"+ch);
  }
  if (doc.owner_id) {
    sync("threads");
    access(doc.owner_id, "ch-"+doc._id)
    access(doc.owner_id, "threads-"+doc.owner_id)
    sync("threads-"+doc.owner_id);
    ms = doc.members
    if (ms) {
      for (i = ms.length - 1; i >= 0; i--) {
        if (ms[i]) {
          access(ms[i], "ch-"+doc._id)
          sync("threads-"+ms[i]);
        }
      }
    }
  }
}
```