Add basic support for viewing datasets

src/main/resources/static/main.js

@@ -1,9 +1,7 @@
+import { DATASET_ENDPOINT, getBaseURL } from "./constants.js";
 import { fetchQuery } from "./contentUtility.js";
 import Dataset from "./dataset.js";
 
-export const DATASET_ENDPOINT = "/api/v1/datasets";
-export const getBaseURL = () => location.origin;
-
 const defaultPagingValue = 20;
 export const lastQuery = {
     totalPages: 0,