rename curated-lists -> story, split pages into own top-level tab again

pages also has sidebar for filtering by list
pages, lists, curatedPages loaded on collection init
curated list only store page id and optional desc, resolved to pages at runtime

src/coll-index.js

@@ -252,7 +252,7 @@ class CollIndex extends LitElement
       <div class="sort-header is-small">
         <a @click=${(e) => this.hideHeader = !this.hideHeader} class="collapse button is-small">
           <span class="icon"><fa-icon .svg=${this.hideHeader ? fasArrowDown : fasArrowUp}></span>
-          <span>${this.hideHeader ? 'Expand' : 'Collapse'}</span>
+          <span>${this.hideHeader ? 'Collapse List' : 'Expand List'}</span>
         </a>
       </div>
       <nav class="panel is-light">