Put a shortlog on the repository index page

The repo index page now shows an abbreviated list of branches and tags
along the left-hand side, with the main content area taken up by a
shortlog of HEAD. Since the ref list is now abbreviated, provide a new
/+refs page that shows the unabbreviated ref list. (This unabbreviated
list is still a bit ugly but ends up looking a lot like the old repo
index page.)

Change-Id: Ie72690d5e9b8162f68818782bfdaa568ad319983

gitiles-servlet/src/main/java/com/google/gitiles/LogSoyData.java

diff --git a/gitiles-servlet/src/main/java/com/google/gitiles/LogSoyData.java b/gitiles-servlet/src/main/java/com/google/gitiles/LogSoyData.java
index dbeb2e9..77bd36a 100644
--- a/gitiles-servlet/src/main/java/com/google/gitiles/LogSoyData.java
+++ b/gitiles-servlet/src/main/java/com/google/gitiles/LogSoyData.java
@@ -14,13 +14,9 @@
 
 package com.google.gitiles;
 
-import java.io.IOException;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
-
-import javax.annotation.Nullable;
-import javax.servlet.http.HttpServletRequest;
+import com.google.common.collect.Lists;
+import com.google.common.collect.Maps;
+import com.google.gitiles.CommitSoyData.KeySet;
 
 import org.eclipse.jgit.lib.AnyObjectId;
 import org.eclipse.jgit.lib.ObjectId;
@@ -29,9 +25,13 @@
 import org.eclipse.jgit.revwalk.RevCommit;
 import org.eclipse.jgit.revwalk.RevWalk;
 
-import com.google.common.collect.Lists;
-import com.google.common.collect.Maps;
-import com.google.gitiles.CommitSoyData.KeySet;
+import java.io.IOException;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import javax.annotation.Nullable;
+import javax.servlet.http.HttpServletRequest;
 
 public class LogSoyData {
   private final HttpServletRequest req;