Replace doc pages with redirects to versioned doc pages.

* Add a new `redirect` Jekyll layout.
* Replace all pages under docs/ with redirects to corresponding page under
  versions/master/.
* Prepend links on Documentation sidebar, including generated navs for the
  Skylark Library and Build Encyclopedia, with prefix for versioned directory.
* Add code to both the internal jekyll-config.sh and external jekyll-tree.sh
  to add redirect pages for the Skylark Library and Build Encyclopedia.
* Bring the branched User Manual doc up to date with latest changes.

--
MOS_MIGRATED_REVID=131568800

1 files changed, 1 insertions, 1 deletions

diff --git a/src/test/java/com/google/devtools/build/lib/packages/BazelDocumentationTest.java b/src/test/java/com/google/devtools/build/lib/packages/BazelDocumentationTest.java
index 70fe645b37..8167bd25d7 100644
--- a/src/test/java/com/google/devtools/build/lib/packages/BazelDocumentationTest.java
+++ b/src/test/java/com/google/devtools/build/lib/packages/BazelDocumentationTest.java
@@ -42,7 +42,7 @@ public class BazelDocumentationTest {
    */
   @Test
   public void testBazelUserManual() throws Exception {
-    String documentationFilePath = "site/docs/bazel-user-manual.html";
+    String documentationFilePath = "site/versions/master/docs/bazel-user-manual.html";
     if (OS.getCurrent() == OS.WINDOWS) {
       documentationFilePath = WindowsTestUtil.getRunfile("io_bazel/" + documentationFilePath);
     }