Updated metadata and labels for RSS/atom feeds. (#8706)

Author: isoos

app/lib/frontend/handlers/atom_feed.dart

@@ -210,9 +210,7 @@ Feed _allPackagesFeed(List<PackageVersion> versions) {
   }
 
   return Feed(
-    title: 'Pub Packages for Dart',
-    subTitle: 'Last Updated Packages',
-    author: 'Dart Team',
+    title: 'Recently published packages on pub.dev',
     alternateUrl: activeConfiguration.primarySiteUri.resolve('/').toString(),
     selfUrl:
         activeConfiguration.primarySiteUri.resolve('/feed.atom').toString(),
@@ -222,7 +220,7 @@ Feed _allPackagesFeed(List<PackageVersion> versions) {
 
 Feed _packageFeed(String package, List<PackageVersion> versions) {
   return Feed(
-    title: 'Most recently published versions for package $package',
+    title: 'Recently published versions of package $package on pub.dev',
     alternateUrl: activeConfiguration.primarySiteUri
         .resolve(urls.pkgPageUrl(package))
         .toString(),

app/test/frontend/handlers/atom_feed_test.dart

@@ -62,15 +62,11 @@ void main() {
 
       final restExp = RegExp('<feed xmlns="http://www.w3.org/2005/Atom">\n'
           '  <id>${activeConfiguration.primarySiteUri}/feed.atom</id>\n'
-          '  <title>Pub Packages for Dart</title>\n'
+          '  <title>Recently published packages on pub.dev</title>\n'
           '  <updated>(.*)</updated>\n'
-          '  <author>\n'
-          '    <name>Dart Team</name>\n'
-          '  </author>\n'
           '  <link href="${activeConfiguration.primarySiteUri}/" rel="alternate"/>\n'
           '  <link href="${activeConfiguration.primarySiteUri}/feed.atom" rel="self"/>\n'
           '  <generator version="0.1.0">Pub Feed Generator</generator>\n'
-          '  <subtitle>Last Updated Packages</subtitle>\n'
           '(\\s*)'
           '</feed>');
       expect(
@@ -115,7 +111,7 @@ void main() {
 
     final restExp = RegExp('<feed xmlns="http://www.w3.org/2005/Atom">\n'
         '  <id>${activeConfiguration.primarySiteUri}/packages/oxygen/feed.atom</id>\n'
-        '  <title>Most recently published versions for package oxygen</title>\n'
+        '  <title>Recently published versions of package oxygen on pub.dev</title>\n'
         '  <updated>(.*)</updated>\n'
         '  <link href="${activeConfiguration.primarySiteUri}/packages/oxygen" rel="alternate"/>\n'
         '  <link href="${activeConfiguration.primarySiteUri}/packages/oxygen/feed.atom" rel="self"/>\n'