diff --git a/Dockerfile b/Dockerfile
index c702e666..20a645e7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -60,7 +60,7 @@ RUN \
 # Fetch gvisor-based sandbox. Note, to enable it to run within default
 # unprivileged docker, layers of protection that require privilege have
 # been stripped away, see https://github.com/google/gvisor/issues/4371
-FROM gristlabs/gvisor-unprivileged:buster as sandbox
+FROM docker.io/gristlabs/gvisor-unprivileged:buster as sandbox
 
 ################################################################################
 ## Run-time stage
diff --git a/README.md b/README.md
index a49e0b30..2af173f6 100644
--- a/README.md
+++ b/README.md
@@ -267,11 +267,11 @@ GRIST_DOMAIN        | in hosted Grist, Grist is served from subdomains of this d
 GRIST_EXPERIMENTAL_PLUGINS | enables experimental plugins
 GRIST_ENABLE_REQUEST_FUNCTION | enables the REQUEST function. This function performs HTTP requests in a similar way to `requests.request`. This function presents a significant security risk, since it can let users call internal endpoints when Grist is available publicly. This function can also cause performance issues. Unset by default.
 GRIST_HIDE_UI_ELEMENTS | comma-separated list of UI features to disable. Allowed names of parts: `helpCenter,billing,templates,createSite,multiSite,multiAccounts,sendToDrive,tutorials`. If a part also exists in GRIST_UI_FEATURES, it will still be disabled.
-GRIST_HOME_INCLUDE_STATIC | if set, home server also serves static resources
 GRIST_HOST          | hostname to use when listening on a port.
 GRIST_HTTPS_PROXY   | if set, use this proxy for webhook payload delivery.
 GRIST_ID_PREFIX | for subdomains of form o-*, expect or produce o-${GRIST_ID_PREFIX}*.
 GRIST_IGNORE_SESSION | if set, Grist will not use a session for authentication.
+GRIST_INCLUDE_CUSTOM_SCRIPT_URL | if set, will load the referenced URL in a `<script>` tag on all app pages.
 GRIST_INST_DIR      | path to Grist instance configuration files, for Grist server.
 GRIST_LIST_PUBLIC_SITES | if set to true, sites shared with the public will be listed for anonymous users. Defaults to false.
 GRIST_MANAGED_WORKERS | if set, Grist can assume that if a url targeted at a doc worker returns a 404, that worker is gone
diff --git a/app/client/components/GridView.js b/app/client/components/GridView.js
index cafc71ef..73970b2b 100644
--- a/app/client/components/GridView.js
+++ b/app/client/components/GridView.js
@@ -55,6 +55,7 @@ const {NEW_FILTER_JSON} = require('app/client/models/ColumnFilter');
 const {CombinedStyle} = require("app/client/models/Styles");
 const {buildRenameColumn} = require('app/client/ui/ColumnTitle');
 const {makeT} = require('app/client/lib/localization');
+const { isList } = require('app/common/gristTypes');
 
 const t = makeT('GridView');
 
@@ -345,6 +346,7 @@ GridView.gridCommands = {
       this.insertColumn(null, {index: this.cursor.fieldIndex() + 1});
     }
   },
+  makeHeadersFromRow: function() { this.makeHeadersFromRow(this.getSelection()); },
   renameField: function() { this.renameColumn(this.cursor.fieldIndex()); },
   hideFields: function() { this.hideFields(this.getSelection()); },
   deleteFields: function() {
@@ -902,6 +904,38 @@ GridView.prototype.insertColumn = async function(colId = null, options = {}) {
   return newColInfo;
 };
 
+GridView.prototype.makeHeadersFromRow = async function(selection) {
+  if (this._getCellContextMenuOptions().disableMakeHeadersFromRow){
+    return;
+  }
+  const record = this.tableModel.tableData.getRecord(selection.rowIds[0]);
+  const actions = this.viewSection.viewFields().peek().reduce((acc, field) => {
+    const col = field.column();
+    const colId = col.colId.peek();
+    let formatter = field.formatter();
+    let newColLabel = record[colId];
+    // Manage column that are references
+    if (col.refTable()) {
+      const refTableDisplayCol = this.gristDoc.docModel.columns.getRowModel(col.displayCol());
+      newColLabel =  record[refTableDisplayCol.colId()];
+      formatter = field.visibleColFormatter();
+    }
+    // Manage column that are lists
+    if (isList(newColLabel)) {
+      newColLabel = newColLabel[1];
+    }
+    if (typeof newColLabel === 'string') {
+      newColLabel = newColLabel.trim();
+    }
+    // Check value is not empty but accept 0 and false as valid values
+    if (newColLabel !== null && newColLabel !== undefined && newColLabel !== "") {
+      return [...acc, ['ModifyColumn', colId, {"label": formatter.formatAny(newColLabel)}]];
+    }
+    return acc
+  }, []);
+  this.tableModel.sendTableActions(actions, "Use as table headers");
+};
+
 GridView.prototype.renameColumn = function(index) {
   this.currentEditingColumnIndex(index);
 };
@@ -1974,6 +2008,9 @@ GridView.prototype._getCellContextMenuOptions = function() {
       this.viewSection.disableAddRemoveRows() ||
       this.getSelection().onlyAddRowSelected()
     ),
+    disableMakeHeadersFromRow: Boolean (
+      this.gristDoc.isReadonly.get() || this.getSelection().rowIds.length !== 1 || this.getSelection().onlyAddRowSelected()
+    ),
     isViewSorted: this.viewSection.activeSortSpec.peek().length > 0,
     numRows: this.getSelection().rowIds.length,
   };
diff --git a/app/client/components/commandList.ts b/app/client/components/commandList.ts
index d943e9ec..c34fc16e 100644
--- a/app/client/components/commandList.ts
+++ b/app/client/components/commandList.ts
@@ -84,6 +84,7 @@ export type CommandName =
   | 'deleteRecords'
   | 'insertFieldBefore'
   | 'insertFieldAfter'
+  | 'makeHeadersFromRow'
   | 'renameField'
   | 'hideFields'
   | 'hideCardFields'
@@ -562,6 +563,10 @@ export const groups: CommendGroupDef[] = [{
       name: 'insertFieldAfter',
       keys: ['Alt+='],
       desc: 'Insert a new column, after the currently selected one'
+    }, {
+      name: 'makeHeadersFromRow',
+      keys: ['Mod+Shift+H'],
+      desc: 'Use currently selected line as table headers'
     }, {
       name: 'renameField',
       keys: ['Ctrl+m'],
diff --git a/app/client/ui/RowContextMenu.ts b/app/client/ui/RowContextMenu.ts
index 365387ce..7421880a 100644
--- a/app/client/ui/RowContextMenu.ts
+++ b/app/client/ui/RowContextMenu.ts
@@ -8,6 +8,7 @@ const t = makeT('RowContextMenu');
 export interface IRowContextMenu {
   disableInsert: boolean;
   disableDelete: boolean;
+  disableMakeHeadersFromRow: boolean;
   disableShowRecordCard: boolean;
   isViewSorted: boolean;
   numRows: number;
@@ -16,6 +17,7 @@ export interface IRowContextMenu {
 export function RowContextMenu({
   disableInsert,
   disableDelete,
+  disableMakeHeadersFromRow,
   disableShowRecordCard,
   isViewSorted,
   numRows
@@ -51,6 +53,11 @@ export function RowContextMenu({
     menuItemCmd(allCommands.duplicateRows, t('Duplicate rows', { count: numRows }),
       dom.cls('disabled', disableInsert || numRows === 0)),
   );
+  result.push(
+    menuDivider(),
+    menuItemCmd(allCommands.makeHeadersFromRow, t("Use as table headers"),
+      dom.cls('disabled', disableMakeHeadersFromRow)),
+  );
   result.push(
     menuDivider(),
     // TODO: should show `Delete ${num} rows` when multiple are selected
diff --git a/app/server/lib/shutdown.js b/app/server/lib/shutdown.js
index 4133580b..104a227e 100644
--- a/app/server/lib/shutdown.js
+++ b/app/server/lib/shutdown.js
@@ -6,6 +6,8 @@
 var log = require('app/server/lib/log');
 var Promise = require('bluebird');
 
+var os = require('os');
+
 var cleanupHandlers = [];
 
 var signalsHandled = {};
@@ -65,8 +67,8 @@ function runCleanupHandlers() {
 }
 
 /**
- * Internal helper to exit on a signal. It runs the cleanup handlers, and then re-sends the same
- * signal, which will no longer get caught.
+ * Internal helper to exit on a signal. It runs the cleanup handlers, and then
+ * exits propagating the same signal code than the one caught.
  */
 function signalExit(signal) {
   var prog = 'grist[' + process.pid + ']';
@@ -81,7 +83,12 @@ function signalExit(signal) {
     log.info("Server %s exiting on %s", prog, signal);
     process.removeListener(signal, dup);
     delete signalsHandled[signal];
-    process.kill(process.pid, signal);
+    // Exit with the expected exit code for being killed by this signal.
+    // Unlike re-sending the same signal, the explicit exit works even
+    // in a situation when Grist is the init (pid 1) process in a container
+    // See https://github.com/gristlabs/grist-core/pull/830 (and #892)
+    const signalNumber = os.constants.signals[signal];
+    process.exit(process.pid, 128 + signalNumber);
   });
 }
 
diff --git a/static/locales/en.client.json b/static/locales/en.client.json
index bec87294..90460109 100644
--- a/static/locales/en.client.json
+++ b/static/locales/en.client.json
@@ -665,7 +665,8 @@
         "Insert row": "Insert row",
         "Insert row above": "Insert row above",
         "Insert row below": "Insert row below",
-        "View as card": "View as card"
+        "View as card": "View as card",
+        "Use as table headers": "Use as table headers"
     },
     "SelectionSummary": {
         "Copied to clipboard": "Copied to clipboard"
diff --git a/static/locales/es.client.json b/static/locales/es.client.json
index 9f813ba2..ef73e6e2 100644
--- a/static/locales/es.client.json
+++ b/static/locales/es.client.json
@@ -586,7 +586,8 @@
         "Insert row below": "Insertar fila debajo",
         "Duplicate rows_one": "Duplicar fila",
         "Duplicate rows_other": "Duplicar filas",
-        "View as card": "Ver como tarjeta"
+        "View as card": "Ver como tarjeta",
+        "Use as table headers": "Usar como encabezados de la tabla"
     },
     "ShareMenu": {
         "Access Details": "Detalles de Acceso",
diff --git a/static/locales/fr.client.json b/static/locales/fr.client.json
index 5aa601cb..74135d33 100644
--- a/static/locales/fr.client.json
+++ b/static/locales/fr.client.json
@@ -1379,5 +1379,15 @@
     "FormSuccessPage": {
         "Form Submitted": "Formulaire envoyé",
         "Thank you! Your response has been recorded.": "Nous vous remercions. Votre réponse a été enregistrée."
+    },
+    "DateRangeOptions": {
+        "Last 30 days": "30 derniers jours",
+        "Next 7 days": "7 prochains jours",
+        "Last 7 days": "7 derniers jours",
+        "Last Week": "Semaine passée",
+        "This month": "Ce mois-ci",
+        "This week": "Cette semaine",
+        "This year": "Cette année",
+        "Today": "Aujourd'hui"
     }
 }
diff --git a/static/locales/ru.client.json b/static/locales/ru.client.json
index 190f0935..73afdf0e 100644
--- a/static/locales/ru.client.json
+++ b/static/locales/ru.client.json
@@ -268,7 +268,9 @@
         "You do not have write access to this site": "У вас нет права записи для этого сайта",
         "Remove all data but keep the structure to use as a template": "Удалить все данные, но сохранить структуру для использования в качестве шаблона.",
         "Download full document and history": "Скачать полный документ и историю",
-        "Remove document history (can significantly reduce file size)": "Удалить историю документа (может значительно уменьшить размер файла)"
+        "Remove document history (can significantly reduce file size)": "Удалить историю документа (может значительно уменьшить размер файла)",
+        "Download": "Скачать",
+        "Download document": "Скачать документ"
     },
     "ShareMenu": {
         "Back to Current": "Вернуться к текущему",
@@ -494,7 +496,7 @@
         "Welcome to {{orgName}}": "Добро пожаловать в {{orgName}}",
         "personal site": "личный сайт",
         "You have read-only access to this site. Currently there are no documents.": "Вы имеете доступ к этому сайту только для просмотра. В настоящее время документов нет.",
-        "{{signUp}} to save your work. ": "{{signUp}} сохранить свою работу. ",
+        "{{signUp}} to save your work. ": "{{signUp}} для сохранения своих данных. ",
         "Welcome to Grist, {{- name}}!": "Добро пожаловать в Grist, {{- name}}!",
         "Welcome to {{- orgName}}": "Добро пожаловать в {{- orgName}}",
         "Visit our {{link}} to learn more about Grist.": "Посетите наш {{link}} чтобы узнать больше о Grist.",
@@ -1375,5 +1377,15 @@
     "FormSuccessPage": {
         "Form Submitted": "Форма отправлена",
         "Thank you! Your response has been recorded.": "Спасибо! Ваш ответ учтен."
+    },
+    "DateRangeOptions": {
+        "Today": "Сегодня",
+        "Last 30 days": "Последние 30 дней",
+        "Last 7 days": "Последние 7 дней",
+        "Last Week": "Последняя неделя",
+        "Next 7 days": "Следующие 7 дней",
+        "This month": "Этот месяц",
+        "This week": "Эта неделя",
+        "This year": "Текущий год"
     }
 }
diff --git a/test/nbrowser/RowMenu.ts b/test/nbrowser/RowMenu.ts
index f4c4e552..6ee539d8 100644
--- a/test/nbrowser/RowMenu.ts
+++ b/test/nbrowser/RowMenu.ts
@@ -72,11 +72,22 @@ describe('RowMenu', function() {
     assert.isFalse(await driver.find('.grist-floating-menu').isPresent());
   });
 
+  it('can rename headers from the selected line', async function() {
+    assert.notEqual(await gu.getColumnHeader({col: 0}).getText(), await gu.getCell(0, 1).getText());
+    assert.notEqual(await gu.getColumnHeader({col: 1}).getText(), await gu.getCell(1, 1).getText());
+    await (await gu.openRowMenu(1)).findContent('li', /Use as table headers/).click();
+    await gu.waitForServer();
+    assert.equal(await gu.getColumnHeader({col: 0}).getText(), await gu.getCell(0, 1).getText());
+    assert.equal(await gu.getColumnHeader({col: 1}).getText(), await gu.getCell(1, 1).getText());
+  });
+
   it('should work even when no columns are visible', async function() {
     // Previously, a bug would cause an error to be thrown instead.
-    await gu.openColumnMenu('A', 'Hide column');
-    await gu.openColumnMenu('B', 'Hide column');
+    await gu.openColumnMenu({col: 0}, 'Hide column');
+    // After hiding the first column, the second one will be the new first column.
+    await gu.openColumnMenu({col: 0}, 'Hide column');
     await assertRowMenuOpensAndCloses();
     await assertRowMenuOpensWithRightClick();
   });
+
 });