Fix namespaces for soy templates

Each template should have it's own namespace.
This is also done in preparation of updates to newer versions of
closure-template:soy where this recommendation has become a requirement.

Change-Id: I012aa1ba347a250aeab62f11237f5a4b781b7a47

java/com/google/gitiles/RepositoryIndexServlet.java

diff --git a/java/com/google/gitiles/RepositoryIndexServlet.java b/java/com/google/gitiles/RepositoryIndexServlet.java
index d057512..0360588 100644
--- a/java/com/google/gitiles/RepositoryIndexServlet.java
+++ b/java/com/google/gitiles/RepositoryIndexServlet.java
@@ -129,7 +129,8 @@
       if (paginator != null) {
         DateFormatter df = new DateFormatter(access, Format.DEFAULT);
         try (OutputStream out =
-            startRenderStreamingHtml(req, res, "gitiles.repositoryIndex", data)) {
+            startRenderStreamingHtml(
+                req, res, "com.google.gitiles.templates.RepositoryIndex.repositoryIndex", data)) {
           Writer w = newWriter(out, res);
           new LogSoyData(req, access, "oneline")
               .renderStreaming(
@@ -137,7 +138,7 @@
           w.flush();
         }
       } else {
-        renderHtml(req, res, "gitiles.repositoryIndex", data);
+        renderHtml(req, res, "com.google.gitiles.templates.RepositoryIndex.repositoryIndex", data);
       }
     }
   }