docs(sidenav reorg): remove glossary and cheatsheet from REFERENCE. Move glossary to BASICS. Rename REFERENCE to API REFERENCE

tools/api-builder/angular.io-package/templates/class.template.html

@@ -148,7 +148,7 @@ include {$ relativePath(doc.path, '_util-fns') $}
 .div(layout="row" layout-xs="column" class="instance-members" class="row-margin")
   div(flex="20" flex-xs="100")
     h2(class="h2-api-docs") Class Details
-  div(flex="80" flex-xs="100")
+  div(class="code-links" flex="80" flex-xs="100")
     {% for member in doc.members %}{% if not member.internal %}
     a(name="{$ member.name $}-anchor" class="anchor-offset")
     pre(class="prettyprint no-bg" ng-class="{ 'anchor-focused': appCtrl.isApiDocMemberFocused('{$ member.name $}') }")