GENERAL
    - Incorporate modules:
        - Hide blank tiles
        - Google Analytics

    - How to make Changelog TOC and Changelog EC combined so as not to have possibility of EC not running

changelog-toc.js
    For *changelog.html pages:
    - wh_topic_toc sometimes shows on the left side of the page. Should be hidden.
    - wh_close_topic_toc_button sometimes shows on right side of page. Should be hidden
    - If sessionSettings variables show null, give explanation to access from the landing page

changelog-ec.js
    - Expand / Collapse all to use bootstrap icon: chevron-expand and chevron-collapse

