Add Gerrit 3.1.7 release notes

Change-Id: Icdcbe19447fba794e2e1fccd02eed881bec7e678
diff --git a/pages/site/releases/3.1.md b/pages/site/releases/3.1.md
index 2d48c28..8ed6217 100644
--- a/pages/site/releases/3.1.md
+++ b/pages/site/releases/3.1.md
@@ -6,7 +6,8 @@
 toc: true
 ---
 
-Download: **[3.1.6](https://gerrit-releases.storage.googleapis.com/gerrit-3.1.6.war)**
+Download: **[3.1.7](https://gerrit-releases.storage.googleapis.com/gerrit-3.1.7.war)**
+| [3.1.6](https://gerrit-releases.storage.googleapis.com/gerrit-3.1.6.war)
 | [3.1.5](https://gerrit-releases.storage.googleapis.com/gerrit-3.1.5.war)
 | [3.1.4](https://gerrit-releases.storage.googleapis.com/gerrit-3.1.4.war)
 | [3.1.3](https://gerrit-releases.storage.googleapis.com/gerrit-3.1.3.war)
@@ -14,7 +15,8 @@
 | [3.1.1](https://gerrit-releases.storage.googleapis.com/gerrit-3.1.1.war)
 | [3.1.0](https://gerrit-releases.storage.googleapis.com/gerrit-3.1.0.war)
 
-Documentation: **[3.1.6](https://gerrit-documentation.storage.googleapis.com/Documentation/3.1.6/index.html)**
+Documentation: **[3.1.7](https://gerrit-documentation.storage.googleapis.com/Documentation/3.1.7/index.html)**
+| [3.1.6](https://gerrit-documentation.storage.googleapis.com/Documentation/3.1.6/index.html)
 | [3.1.5](https://gerrit-documentation.storage.googleapis.com/Documentation/3.1.5/index.html)
 | [3.1.4](https://gerrit-documentation.storage.googleapis.com/Documentation/3.1.4/index.html)
 | [3.1.3](https://gerrit-documentation.storage.googleapis.com/Documentation/3.1.3/index.html)
@@ -296,6 +298,41 @@
 
 ## Bugfix Releases
 
+### 3.1.7
+
+* Security Fixes
+
+  * [Issue 12926](https://bugs.chromium.org/p/gerrit/issues/detail?id=12926):
+  Allow setting X-Frame-Options response header for preventing
+  [clickjacking attacks](https://owasp.org/www-community/attacks/Clickjacking).
+
+* Bug Fixes
+
+  * [Issue 12680](https://bugs.chromium.org/p/gerrit/issues/detail?id=12680):
+  Run projects reindex after Gerrit init only when needed, speeding up the upgrade process.
+
+  * [Issue 12778](https://bugs.chromium.org/p/gerrit/issues/detail?id=12778):
+  Fix `Included In` filter not working in the search box.
+
+  * [Issue 12909](https://bugs.chromium.org/p/gerrit/issues/detail?id=12909):
+  Fx missing index creation after Gerrit init.
+
+  * [Issue 12918](https://bugs.chromium.org/p/gerrit/issues/detail?id=12918):
+  Fix missing email notifications for project watches for changes created via cherry-pick.
+
+* PolyGerrit Fixes
+
+  * [Issue 11368](https://bugs.chromium.org/p/gerrit/issues/detail?id=11368):
+  Fix Javascript error if project has incorrect access configuration in `Global Capabilities`.
+
+  * [Issue 12899](https://bugs.chromium.org/p/gerrit/issues/detail?id=12899):
+  Speedup the rendering of changes with large number of comments by lazy loading them when expanded.
+
+* Documentation Updates
+
+  * [Issue 12869](https://bugs.chromium.org/p/gerrit/issues/detail?id=12869):
+  Add documentation on how to move a change across branches.
+
 ### 3.1.6
 
 * New Features