message: Add setting whether to show avatars
diff: @@ -491,6 +491,11 @@ public:
  connect(hideMenuBar, &QCheckBox::toggled, [](bool checked) {
  Settings::instance()->setValue("window/view/menuBarHidden", checked);
  });
  + QCheckBox *showAvatars = new QCheckBox(tr("Show Avatars"));
  + showAvatars->setChecked(settings->value("avatarsVisible").toBool());
  + connect(showAvatars, &QCheckBox::toggled, [](bool checked) {
  + Settings::instance()->setValue("window/view/avatarsVisible", checked);
  + });
  settings->endGroup(); // view
  settings->endGroup(); // window
  @@ -546,6 +551,7 @@ public:
  layout->addRow(tr("Tabs:"), smTabs);
  layout->addRow(QString(), repoTabs);
  layout->addRow(tr("View:"), hideMenuBar);
  + layout->addRow(QString(), showAvatars);
  layout->addRow(tr("Prompt:"), merge);
  layout->addRow(QString(), revert);
  layout->addRow(QString(), cherryPick);
  