CE-604 Updates to DataTable for fixed-sticky footer and expandable rows; Misc style updates going along with e.g., card border change

src/qqq/styles/qqq-override-styles.css

@@ -564,3 +564,14 @@ input[type="search"]::-webkit-search-results-decoration { display: none; }
    display: inline;
    right: .5rem
 }
+
+.hideScrollbars::-webkit-scrollbar {
+   background: transparent; /* Chrome/Safari/Webkit */
+   width: 0;
+}
+
+.hideScrollbars {
+   padding-right: 8px; /* pad-right for about half the width of a scrollbar.. */
+   scrollbar-width: none; /* Firefox */
+   -ms-overflow-style: none;  /* IE 10+ */
+}