diff --git a/Documentation/dev-release.txt b/Documentation/dev-release.txt
index a7240e2..0849c56 100644
--- a/Documentation/dev-release.txt
+++ b/Documentation/dev-release.txt
@@ -153,7 +153,7 @@
 Tag the plugins:
 
 ----
-  git submodule foreach '[ "$path" == "modules/jgit" ] || git tag -s -m "v$version" "v$version"'
+  git submodule foreach '[ "$sm_path" == "modules/jgit" ] || git tag -s -m "v$version" "v$version"'
 ----
 
 [[build-gerrit]]
@@ -324,7 +324,7 @@
 Push the new Release Tag on the plugins:
 
 ----
-  git submodule foreach git push gerrit-review tag v$version
+  git submodule foreach '[ "$sm_path" == "modules/jgit" ] || git push gerrit-review tag "v$version"'
 ----
 
 [[upload-documentation]]
diff --git a/Documentation/note-db.txt b/Documentation/note-db.txt
index a13cbfb..b376d6e 100644
--- a/Documentation/note-db.txt
+++ b/Documentation/note-db.txt
@@ -36,6 +36,67 @@
 not available in 3.0, so any upgrade from Gerrit 2.x to 3.x must go through
 2.16 to effect the NoteDb upgrade.
 
+== Format
+
+Each review ("change") in Gerrit is numbered. The different revisions
+("patchsets") of a change 12345 are stored under
+----
+  refs/changes/45/12345/${PATCHSET_NUMBER}
+----
+
+The revisions are stored as commits to the main project, ie. if you
+fetch this ref, you can check out the proposed change.
+
+A change 12345 has its review metadata under
+----
+  refs/changes/45/12345/meta
+----
+The metadata is a notes branch. The commit messages on the branch hold
+modifications to global data of the change (votes, global comments). The inline
+comments are in a
+link:https://git.eclipse.org/r/plugins/gitiles/jgit/jgit/\+/master/org.eclipse.jgit/src/org/eclipse/jgit/notes/NoteMap.java[NoteMap],
+where the key is the commit SHA-1 of the patchset
+that the comment refers to, and the value is JSON data. The format of the
+JSON is in the
+link:https://gerrit.googlesource.com/gerrit/\+/master/java/com/google/gerrit/server/notedb/RevisionNoteData.java[RevisionNoteData]
+which contains 
+link:https://gerrit.googlesource.com/gerrit/\+/master/java/com/google/gerrit/entities/Comment.java[Comment] entities.
+
+For example:
+----
+   {
+      "key": {
+        "uuid": "c7be1334_47885e36",
+        "filename":
+"java/com/google/gerrit/server/restapi/project/CommitsCollection.java",
+        "patchSetId": 7
+      },
+      "lineNbr": 158,
+      "author": {
+        "id": 1026112
+      },
+      "writtenOn": "2019-11-06T09:00:50Z",
+      "side": 1,
+      "message": "nit: factor this out in a variable, use
+toImmutableList as collector",
+      "range": {
+        "startLine": 156,
+        "startChar": 32,
+        "endLine": 158,
+        "endChar": 66
+      },
+      "revId": "071c601d6ee1a2a9f520415fd9efef8e00f9cf60",
+      "serverId": "173816e5-2b9a-37c3-8a2e-48639d4f1153",
+      "unresolved": true
+    },
+----
+
+Automated systems may post "robot comments" instead of normal
+comments, which are an extension of the previous comment, defined in
+the
+link:https://gerrit.googlesource.com/gerrit/\+/master/java/com/google/gerrit/entities/RobotComment.java[RobotComment]
+class.
+
 [[migration]]
 == Migration
 
diff --git a/java/com/google/gerrit/testing/TestLoggingActivator.java b/java/com/google/gerrit/testing/TestLoggingActivator.java
index 6b5d8fd..b3ad862 100644
--- a/java/com/google/gerrit/testing/TestLoggingActivator.java
+++ b/java/com/google/gerrit/testing/TestLoggingActivator.java
@@ -48,11 +48,6 @@
           .put("org.openid4java.server.RealmVerifier", Level.ERROR)
           .put("org.openid4java.message.AuthSuccess", Level.ERROR)
 
-          // Silence non-critical messages from c3p0 (if used).
-          .put("com.mchange.v2.c3p0", Level.WARN)
-          .put("com.mchange.v2.resourcepool", Level.WARN)
-          .put("com.mchange.v2.sql", Level.WARN)
-
           // Silence non-critical messages from apache.http.
           .put("org.apache.http", Level.WARN)
 
diff --git a/javatests/com/google/gerrit/server/query/change/AbstractQueryChangesTest.java b/javatests/com/google/gerrit/server/query/change/AbstractQueryChangesTest.java
index b97d9f2..cbeb59d 100644
--- a/javatests/com/google/gerrit/server/query/change/AbstractQueryChangesTest.java
+++ b/javatests/com/google/gerrit/server/query/change/AbstractQueryChangesTest.java
@@ -19,6 +19,7 @@
 import static com.google.common.truth.Truth.assertWithMessage;
 import static com.google.common.truth.TruthJUnit.assume;
 import static com.google.gerrit.acceptance.testsuite.project.TestProjectUpdate.allowLabel;
+import static com.google.gerrit.acceptance.testsuite.project.TestProjectUpdate.block;
 import static com.google.gerrit.extensions.client.ListChangesOption.DETAILED_LABELS;
 import static com.google.gerrit.extensions.client.ListChangesOption.REVIEWED;
 import static com.google.gerrit.server.group.SystemGroupBackend.REGISTERED_USERS;
@@ -705,6 +706,23 @@
   }
 
   @Test
+  public void byProjectWithHidden() throws Exception {
+    TestRepository<Repo> hiddenProject = createProject("hiddenProject");
+    insert(hiddenProject, newChange(hiddenProject));
+    projectOperations
+        .project(Project.nameKey("hiddenProject"))
+        .forUpdate()
+        .add(block(Permission.READ).ref("refs/*").group(REGISTERED_USERS))
+        .update();
+
+    TestRepository<Repo> visibleProject = createProject("visibleProject");
+    Change visibleChange = insert(visibleProject, newChange(visibleProject));
+    assertQuery("project:visibleProject", visibleChange);
+    assertQuery("project:hiddenProject");
+    assertQuery("project:visibleProject OR project:hiddenProject", visibleChange);
+  }
+
+  @Test
   public void byParentOf() throws Exception {
     TestRepository<Repo> repo1 = createProject("repo1");
     RevCommit commit1 = repo1.parseBody(repo1.commit().message("message").create());
diff --git a/plugins/codemirror-editor b/plugins/codemirror-editor
index 3cd520b..30c774f 160000
--- a/plugins/codemirror-editor
+++ b/plugins/codemirror-editor
@@ -1 +1 @@
-Subproject commit 3cd520b1521ff7c558d0cd95274628a3a20de30a
+Subproject commit 30c774f30c1709f71efc250a195dd6fb50c7503b
diff --git a/plugins/delete-project b/plugins/delete-project
index bfe159d..549de03 160000
--- a/plugins/delete-project
+++ b/plugins/delete-project
@@ -1 +1 @@
-Subproject commit bfe159d3007db0f07e967473b53f679ba8f432df
+Subproject commit 549de033d60b13aaeef45ce5c4bf42be39506268
diff --git a/polygerrit-ui/app/elements/change/gr-confirm-move-dialog/gr-confirm-move-dialog.ts b/polygerrit-ui/app/elements/change/gr-confirm-move-dialog/gr-confirm-move-dialog.ts
index ce5b246..eb4053a 100644
--- a/polygerrit-ui/app/elements/change/gr-confirm-move-dialog/gr-confirm-move-dialog.ts
+++ b/polygerrit-ui/app/elements/change/gr-confirm-move-dialog/gr-confirm-move-dialog.ts
@@ -55,7 +55,7 @@
   project?: RepoName;
 
   @property({type: Object})
-  _query?: (_text?: string) => Promise<AutocompleteSuggestion[]>;
+  _query: (input: string) => Promise<AutocompleteSuggestion[]>;
 
   get keyBindings() {
     return {
@@ -67,7 +67,7 @@
 
   constructor() {
     super();
-    this._query = () => this._getProjectBranchesSuggestions();
+    this._query = (text: string) => this._getProjectBranchesSuggestions(text);
   }
 
   _handleConfirmTap(e: Event) {
@@ -93,10 +93,9 @@
   }
 
   _getProjectBranchesSuggestions(
-    input?: string
+    input: string
   ): Promise<AutocompleteSuggestion[]> {
     if (!this.project) return Promise.reject(new Error('Missing project'));
-    if (!input) return Promise.reject(new Error('Missing input'));
     if (input.startsWith('refs/heads/')) {
       input = input.substring('refs/heads/'.length);
     }
diff --git a/polygerrit-ui/app/elements/change/gr-confirm-move-dialog/gr-confirm-move-dialog_test.js b/polygerrit-ui/app/elements/change/gr-confirm-move-dialog/gr-confirm-move-dialog_test.js
index db00f6b..36a2ad3 100644
--- a/polygerrit-ui/app/elements/change/gr-confirm-move-dialog/gr-confirm-move-dialog_test.js
+++ b/polygerrit-ui/app/elements/change/gr-confirm-move-dialog/gr-confirm-move-dialog_test.js
@@ -64,5 +64,12 @@
       done();
     });
   });
+
+  test('_getProjectBranchesSuggestions input empty string', done => {
+    element._getProjectBranchesSuggestions('').then(branches => {
+      assert.equal(branches.length, 0);
+      done();
+    });
+  });
 });
 
diff --git a/polygerrit-ui/app/styles/themes/dark-theme.ts b/polygerrit-ui/app/styles/themes/dark-theme.ts
index f877771..01cee4c 100644
--- a/polygerrit-ui/app/styles/themes/dark-theme.ts
+++ b/polygerrit-ui/app/styles/themes/dark-theme.ts
@@ -174,7 +174,7 @@
       --header-text-color: var(--primary-text-color);
 
       /* diff colors */
-      --dark-add-highlight-color: #133820;
+      --dark-add-highlight-color: var(--green-tonal); 
       --dark-rebased-add-highlight-color: rgba(11, 255, 155, 0.15);
       --dark-rebased-remove-highlight-color: rgba(255, 139, 6, 0.15);
       --dark-remove-highlight-color: #62110f;
@@ -187,7 +187,7 @@
       --diff-selection-background-color: #3a71d8;
       --diff-tab-indicator-color: var(--deemphasized-text-color);
       --diff-trailing-whitespace-indicator: #ff9ad2;
-      --light-add-highlight-color: #0f401f;
+      --light-add-highlight-color: #182b1f;
       --light-rebased-add-highlight-color: #487165;
       --diff-moved-in-background: #1d4042;
       --diff-moved-out-background: #230e34;
diff --git a/resources/log4j.properties b/resources/log4j.properties
index 39246b3..2898cfc 100644
--- a/resources/log4j.properties
+++ b/resources/log4j.properties
@@ -41,11 +41,5 @@
 log4j.logger.org.openid4java.server.RealmVerifier=ERROR
 log4j.logger.org.openid4java.message.AuthSuccess=ERROR
 
-# Silence non-critical messages from c3p0 (if used).
-#
-log4j.logger.com.mchange.v2.c3p0=WARN
-log4j.logger.com.mchange.v2.resourcepool=WARN
-log4j.logger.com.mchange.v2.sql=WARN
-
 # Silence non-critical messages from apache.http
 log4j.logger.org.apache.http=WARN
diff --git a/tools/bzl/js.bzl b/tools/bzl/js.bzl
index bbb1432..facb1ce 100644
--- a/tools/bzl/js.bzl
+++ b/tools/bzl/js.bzl
@@ -455,22 +455,8 @@
     if not plugin_name:
         plugin_name = name
 
-    html_plugin = app.endswith(".html")
     srcs = srcs if app in srcs else srcs + [app]
-
-    if html_plugin:
-        # Combines all .js and .html files into foo_combined.js and foo_combined.html
-        _bundle_rule(
-            name = name + "_combined",
-            app = app,
-            srcs = srcs,
-            deps = deps,
-            pkg = native.package_name(),
-            **kwargs
-        )
-        js_srcs = [name + "_combined.js"]
-    else:
-        js_srcs = srcs
+    js_srcs = srcs
 
     native.filegroup(
         name = name + "-src-fg",
@@ -483,25 +469,6 @@
         src = name + "-src-fg",
     )
 
-    if html_plugin:
-        native.genrule(
-            name = name + "_rename_html",
-            srcs = [name + "_combined.html"],
-            outs = [plugin_name + ".html"],
-            cmd = "sed 's/<script src=\"" + name + "_combined.js\"/<script src=\"" + plugin_name + ".js\"/g' $(SRCS) > $(OUTS)",
-            output_to_bindir = True,
-        )
-    else:
-        # For polymer 3 migration, we will only have js plugins, in case server side
-        # is still asking for *.html, we still want to create a html placeholder just to load the js
-        # TODO(taoalpha): this should be cleaned up once polymer 3 plugins are the only ones gerrit supports
-        native.genrule(
-            name = name + "_rename_html",
-            outs = [plugin_name + ".html"],
-            cmd = "echo \"<script src='" + plugin_name + ".js'></script>\" > $(OUTS)",
-            output_to_bindir = True,
-        )
-
     native.genrule(
         name = name + "_rename_js",
         srcs = [name + ".min"],
@@ -510,7 +477,7 @@
         output_to_bindir = True,
     )
 
-    static_files = [plugin_name + ".js", plugin_name + ".html"]
+    static_files = [plugin_name + ".js"]
 
     if assets:
         nested, direct = [], []