Move top-level mustache templates to subdirs.

app/lib/frontend/templates/admin.dart

@@ -20,20 +20,20 @@ import 'layout.dart';
 import 'listing.dart';
 import 'publisher.dart' show renderPublisherList;
 
-/// Renders the `views/authorized.mustache` template.
+/// Renders the `views/account/authorized.mustache` template.
 String renderAuthorizedPage() {
-  final String content = templateCache.renderTemplate('authorized', {});
+  final String content = templateCache.renderTemplate('account/authorized', {});
   return renderLayoutPage(PageType.package, content,
       title: 'Pub Authorized Successfully', includeSurvey: false);
 }
 
-/// Renders the `views/consent.mustache` template.
+/// Renders the `views/account/consent.mustache` template.
 String renderConsentPage({
   @required String consentId,
   @required String title,
   @required String descriptionHtml,
 }) {
-  final content = templateCache.renderTemplate('consent', {
+  final content = templateCache.renderTemplate('account/consent', {
     'title': title,
     'description_html': descriptionHtml,
   });

app/lib/frontend/templates/landing.dart

@@ -9,7 +9,7 @@ import '_cache.dart';
 import 'layout.dart';
 import 'misc.dart' show renderMiniList;
 
-/// Renders the `views/landing.mustache` template.
+/// Renders the `views/page/landing.mustache` template.
 String renderLandingPage({
   List<PackageView> taggedPackages,
   List<PackageView> topPackages,
@@ -24,7 +24,7 @@ String renderLandingPage({
     'top_minilist_html': hasTop ? renderMiniList(topPackages) : null,
     'top_more_url': urls.searchUrl(),
   };
-  final String content = templateCache.renderTemplate('landing', values);
+  final String content = templateCache.renderTemplate('page/landing', values);
   return renderLayoutPage(
     PageType.landing,
     content,

app/lib/frontend/templates/layout.dart

@@ -33,7 +33,7 @@ enum PageType {
   standalone,
 }
 
-/// Renders the `views/layout.mustache` template.
+/// Renders the `views/shared/layout.mustache` template.
 String renderLayoutPage(
   PageType type,
   String contentHtml, {
@@ -93,7 +93,7 @@ String renderLayoutPage(
     'page_data_encoded': pageDataEncoded,
   };
 
-  return templateCache.renderTemplate('layout', values);
+  return templateCache.renderTemplate('shared/layout', values);
 }
 
 String _renderSiteHeader() {

app/lib/frontend/templates/listing.dart

@@ -18,12 +18,12 @@ import '_utils.dart';
 import 'layout.dart';
 import 'misc.dart';
 
-/// Renders the `views/pagination.mustache` template.
+/// Renders the `views/shared/pagination.mustache` template.
 String renderPagination(PageLinks pageLinks) {
   final values = {
     'page_links': pageLinks.hrefPatterns(),
   };
-  return templateCache.renderTemplate('pagination', values);
+  return templateCache.renderTemplate('shared/pagination', values);
 }
 
 /// Renders the `views/pkg/package_list.mustache` template.

app/lib/frontend/templates/misc.dart

@@ -44,9 +44,9 @@ String renderUnauthorizedPage({String messageMarkdown}) {
   );
 }
 
-/// Renders the `views/help.mustache` template.
+/// Renders the `views/page/help.mustache` template.
 String renderHelpPage() {
-  final String content = templateCache.renderTemplate('help', {
+  final String content = templateCache.renderTemplate('page/help', {
     'dart_site_root': urls.dartSiteRoot,
     'pana_url': urls.panaUrl(),
     'pana_maintenance_url': urls.panaMaintenanceUrl(),
@@ -55,14 +55,14 @@ String renderHelpPage() {
       title: 'Help | Dart packages');
 }
 
-/// Renders the `views/security.mustache` template.
+/// Renders the `views/page/security.mustache` template.
 String renderSecurityPage() {
-  final String content = templateCache.renderTemplate('security', {});
+  final String content = templateCache.renderTemplate('page/security', {});
   return renderLayoutPage(PageType.standalone, content,
       title: 'Security | Pub site');
 }
 
-/// Renders the `views/show.mustache` template.
+/// Renders the `views/page/error.mustache` template.
 String renderErrorPage(
     String title, String message, List<PackageView> topPackages) {
   final hasTopPackages = topPackages != null && topPackages.isNotEmpty;
@@ -73,7 +73,7 @@ String renderErrorPage(
     'has_top_packages': hasTopPackages,
     'top_packages_html': topPackagesHtml,
   };
-  final String content = templateCache.renderTemplate('error', values);
+  final String content = templateCache.renderTemplate('page/error', values);
   return renderLayoutPage(
     PageType.error,
     content,
@@ -82,7 +82,7 @@ String renderErrorPage(
   );
 }
 
-/// Renders the `views/mini_list.mustache` template.
+/// Renders the `views/pkg/mini_list.mustache` template.
 String renderMiniList(List<PackageView> packages) {
   final values = {
     'packages': packages.map((package) {
@@ -103,7 +103,7 @@ String renderMiniList(List<PackageView> packages) {
       };
     }).toList(),
   };
-  return templateCache.renderTemplate('mini_list', values);
+  return templateCache.renderTemplate('pkg/mini_list', values);
 }
 
 /// Renders the tags using the pkg/tags template.