Initial set of Gerrit v2.16.23 release notes

Start the Gerrit v2.16.23 release notes with an initial extraction
of the major fixes and improvements introduced since the last
version.

Also adjust the headers by removing, for better consistency, the
trailing ':' at the end of each chapter.

Change-Id: I7ec134f62babbac6716988e6b0870689d53c7856
diff --git a/pages/site/releases/2.16.md b/pages/site/releases/2.16.md
index 1ba5e89..9bcff35 100644
--- a/pages/site/releases/2.16.md
+++ b/pages/site/releases/2.16.md
@@ -634,6 +634,53 @@
 
 ## Bugfix Releases
 
+### 2.16.23 (In Development)
+
+* NoteDb Migrator Fixes and Improvements
+
+  * Introduce a new option `--force-state-change-with-skip` in the
+  NoteDb migrator to force state change of the migration if projects are skipped.
+
+  * Introduce a new option `--verbose` in the
+  NoteDb migrator to display more information about the migration progress.
+
+  * Log the NoteDb migration progress every 1000 changes.
+
+  * Use multiple threads per project for improving the performance when there are
+  a lot of changes per project. The impact is negligible on projects with a limited number
+  of changes.
+
+  * Ensure that all exceptions happening during the migration are properly logged.
+
+* PolyGerrit UI Fixes
+
+  * [Issue 11706](https://bugs.chromium.org/p/gerrit/issues/detail?id=11706):
+  Enable the ability to modify the commit message as part of change in-line edit.
+
+  * [Issue 13328](https://bugs.chromium.org/p/gerrit/issues/detail?id=13328):
+  Project dashboard links stored in 'My' menu (GWT) lead to 'cannot load page' when
+  switched to PolyGerrit.
+
+  * [Issue 13350](https://bugs.chromium.org/p/gerrit/issues/detail?id=13350):
+  Cannot add group to (cc-)review if its UUID is not the internal one.
+
+* Replication plugin Fixes
+
+  * [Issue 12769](https://bugs.chromium.org/p/gerrit/issues/detail?id=12769):
+  Pending replication events can delay the Gerrit startup for too long.
+
+* Documentation Updates
+
+  * Introduce the
+  [documentation of Gerrit logs](https://gerrit-documentation.storage.googleapis.com/Documentation/2.16.23/logs.html)
+  format and the meaning of each field.
+
+  * Clarify [how to resolve common Bazel issues](https://gerrit-documentation.storage.googleapis.com/Documentation/2.16.23/dev-eclipse.html)
+  with Eclipse project generation.
+
+  * Document X-Forwarded-For header in the
+  [Gerrit reverse-proxy section](https://gerrit-documentation.storage.googleapis.com/Documentation/2.16.23/config-reverseproxy.html).
+
 ### 2.16.22
 
 * Security Fixes
@@ -654,7 +701,7 @@
     [Issue 4936](https://github.com/eclipse/jetty.project/issues/4936)
     [Issue 4541](https://github.com/eclipse/jetty.project/issues/4541)
 
-* Bug Fixes:
+* Bug Fixes
 
   * Use multiple threads per project when reindexing changes
 
@@ -710,7 +757,7 @@
     A disabled account was still able to access over HTTP until the existing
     session expired.
 
-* Bug Fixes:
+* Bug Fixes
 
   * [Issue 11707](https://bugs.chromium.org/p/gerrit/issues/detail?id=11706):
     Support `/COMMIT_MSG` for change edit REST endpoints.
@@ -1423,7 +1470,7 @@
 
   * Add "readOnly" endpoint parameter to repo-config endpoint in PolyGerrit Plugin RestApi.
 
-* PolyGerrit UI Fixes:
+* PolyGerrit UI Fixes
 
   * Hide "HTTP Credentials" if auth is not `HTTP` or `HTTP_LDAP`.
 
@@ -1455,7 +1502,7 @@
 
   * Update elasticsearch-rest-client to 7.4.2.
 
-* Replication plugin fixes:
+* Replication plugin Fixes
 
   * [Issue 11573](https://bugs.chromium.org/p/gerrit/issues/detail?id=11573):
   Fix dropping events during plugin restart.
@@ -1468,7 +1515,7 @@
     Gerrit loads all external-ids from NoteDb. This happens whenever the
     external_ids_map cache gets invalidated or expires.
 
-* Other fixes:
+* Other Fixes
 
   * [Issue 11246](https://bugs.chromium.org/p/gerrit/issues/detail?id=11246):
   Fix login failures "email <> is already assigned to account <> ..." after upgrading to v2.16.
@@ -1543,7 +1590,7 @@
     allow to manually configure the Lucene index, rather than using auto-detected
     values, to improve performance.
 
-* PolyGerrit UI Fixes:
+* PolyGerrit UI Fixes
 
   * Add "Delete Changes" permission to the access editor.
 
@@ -1573,7 +1620,7 @@
 
     This version includes a fix for racy atomic ref updates.
 
-* Replication plugin fixes:
+* Replication plugin Fixes
 
   * [Issue 11145](https://bugs.chromium.org/p/gerrit/issues/detail?id=11145):
   Drain replication queue before stopping the plugin.
@@ -1581,7 +1628,7 @@
   * [Issue 11424](https://bugs.chromium.org/p/gerrit/issues/detail?id=11424):
   Fix ReplicationTasksStorage exceptions in error_log when triggering replication of all refs.
 
-* Singleusergroup plugin fixes:
+* Singleusergroup plugin Fixes
 
   * [Issue 11498](https://bugs.chromium.org/p/gerrit/issues/detail?id=11498):
   Fix group resolution for all numeric usernames.
@@ -1732,7 +1779,7 @@
   * [Issue 11271](https://bugs.chromium.org/p/gerrit/issues/detail?id=11271):
   Update rules_go to 0.18.6 for compatibility with Bazel 0.27.0
 
-* Replication plugin fixes:
+* Replication plugin Fixes
 
   * [Issue 10852](https://bugs.chromium.org/p/gerrit/issues/detail?id=10852):
   Fix stale replications caused by in-flight pushes not properly removed when failed.
@@ -1841,7 +1888,7 @@
 
 * Expose the jsr305 library in the plugin API.
 
-* PolyGerrit UI fixes:
+* PolyGerrit UI Fixes
 
   * Only display 404 page on initial load.
 
@@ -1858,7 +1905,7 @@
 
   * Fix dialog popup when going to /admin/create-project.
 
-* Elasticsearch fixes:
+* Elasticsearch Fixes
 
   * Support for Elasticsearch 7.2 and and upgrade elasticsearch-rest-client to 7.2.0.
 
@@ -2092,7 +2139,7 @@
 
 * Upgrade protobuf-java to 3.7.1.
 
-* PolyGerrit fixes:
+* PolyGerrit Fixes
 
   * [Issue 10696](https://bugs.chromium.org/p/gerrit/issues/detail?id=10696):
 Increase autocomplete limit for repo inheritance in access page to 50.