Refactor fetch functions to use new FullData.Insert{Feed,Page} funcs

fetch/http.go

@@ -72,7 +72,7 @@ func httpFeed(data *core.FullData, remote *url.URL, title string) error {
 		return err
 	}
 
-	InsertFeed(data, feed, remote)
+	data.InsertFeed(feed, remote)
 	return nil
 }
 
@@ -98,6 +98,6 @@ func httpPage(data *core.FullData, remote *url.URL, title string) error {
 	page.Hash = newHash
 	page.Updated = time.Now()
 
-	InsertPage(data, &page, remote)
+	data.InsertPage(&page, remote)
 	return nil
 }