correct load URLs for model layer

src/lib/Fetcher.js

@@ -162,7 +162,7 @@ class Fetcher {
   // NB: could combine these functions by checking kwargs length
   retrieve (tab, resource) {
     const title = fmtName(tab)
-    const url = `${this.sheetName}/${tab}/${resource}`
+    const url = `${this.id}/${tab}/${resource}`
     return this.db.load(url, this.blueprints[title])
   }