Better namespacing multidatabase

nullboard.html

@@ -1283,8 +1283,7 @@
          {
             this.databases.push(arguments[i]);
          }
-         this.deltas = new Deltas(this.primary());
+         this.deltas = new Deltas(this.cache());
-         this.cachedb = new NamespacedDatabase("cache", new Local()),
          this.scheduleSync();
          this.syncCacheWithPrimary();
       }
@@ -1310,7 +1309,9 @@
 
       cache()
       {
-         return this.cachedb;
+         if (this.databases.length > 1)
+            return this.databases[1];
+         return this.primary();
       }
 
       primary()
@@ -1320,7 +1321,7 @@
 
       replicas()
       {
-         return [this.cache()].concat(this.databases.slice(1));
+         return this.databases.slice(1);
       }
 
       scheduleSync()