Re-level non-docs content to top of repo and rename content→docs

static/js/expandcode.js

@@ -0,0 +1,59 @@
+const tExpand='<i class="fa fa-expand"></i><span class="sr-only">Expand</span>'
+const tCollapse='<i class="fa fa-compress"></i><span class="sr-only">Shrink</span>'
+
+function toggle_cs(eo) {
+    const wrapper = $(eo.target).closest(".code_sample");
+    const code_el = wrapper.find("code");
+    code_el.toggleClass('expanded');
+    const placeholders = wrapper.find(".code-placeholder");
+    if (placeholders.length) {
+        // collapsing
+        placeholders.remove();
+        // This caused jumping around when code was closed.
+        // $(window).scrollTop(code_el.offset().top - 124)
+    } else {
+        code_el.after("<div class='code-placeholder' style='width:"
+                            + code_el.outerWidth()
+                            + "px; height:"
+                            + (code_el.outerHeight() - 20) // added 20 to cover bottom scrollbar
+                            + "px;'>&nbsp;</div>");
+    }
+    current_button_expanded = code_el.hasClass('expanded');
+    $(wrapper.find(".code_toggler")).html(current_button_expanded ? tCollapse : tExpand);
+}
+
+function has_scrollbars(e) {
+  if ($(e).parents(".multicode").length > 0) {
+    //TODO: figure out if we can detect scrollbars on non-default tabs of
+    // multicode samples. For now, always consider multi-code sections to need
+    // scrollbars.
+    return true;
+  }
+  return (e.scrollHeight > e.clientHeight) || (e.scrollWidth > e.clientWidth);
+}
+
+function make_code_expandable() {
+    var newid = 0;
+    $(".content > pre > code").parent().wrap(function() {
+        newid = newid+1;
+        return "<div class='code_sample' id='code_autoid_"+newid+"'>";
+    });
+
+    // Multi code blocks
+    var code_samples = $('.code_sample');
+    code_samples.find("code").each(function() {
+      let jqThis = $(this);
+      if (has_scrollbars(this)) {
+        jqThis.dblclick(toggle_cs);
+        jqThis.attr('title', 'Double-click to expand/collapse');
+        var newbtn = $(`<button class='code_toggler btn btn-outline-secondary'>${tExpand}</button>`);
+        newbtn.appendTo(jqThis.parents(".codehilite").children(".btn-group"));
+      }
+    });
+
+    $(".code_toggler").click(toggle_cs);
+
+    /* fix expand/collapse and tab click hierarchy */
+    code_samples.css("position","relative");
+    $(".multicode .code_sample").css("position","static");
+}