Add browser extension links to settings page

src/browser/BrowserOptionDialog.cpp

@@ -34,6 +34,11 @@ BrowserOptionDialog::BrowserOptionDialog(QWidget* parent) :
     connect(m_ui->removeSharedEncryptionKeys, SIGNAL(clicked()), this, SIGNAL(removeSharedEncryptionKeys()));
     connect(m_ui->removeStoredPermissions, SIGNAL(clicked()), this, SIGNAL(removeStoredPermissions()));
 
+    m_ui->extensionLabel->setOpenExternalLinks(true);
+    m_ui->extensionLabel->setText(tr("KeePassXC-Browser is needed for the browser integration to work. <br />Download it for %1 and %2.").arg(
+        "<a href=\"https://addons.mozilla.org/en-US/firefox/addon/keepassxc-browser/\">Firefox</a>",
+        "<a href=\"https://chrome.google.com/webstore/detail/keepassxc-browser/oboonakemofpalcgghocfoadofidjkkk\">Google Chrome / Chromium / Vivaldi</a>"));
+
     m_ui->warningWidget->showMessage(tr("<b>Warning:</b> The following options can be dangerous!"), MessageWidget::Warning);
     m_ui->warningWidget->setCloseButtonVisible(false);
     m_ui->warningWidget->setAutoHideTimeout(-1);

src/browser/BrowserOptionDialog.ui

@@ -49,6 +49,26 @@
        <string>General</string>
       </attribute>
       <layout class="QVBoxLayout" name="verticalLayout_2">
+       <item>
+        <widget class="QLabel" name="extensionLabel">
+        </widget>
+       </item>
+       <item>
+        <spacer name="verticalSpacer_1">
+         <property name="orientation">
+          <enum>Qt::Vertical</enum>
+         </property>
+         <property name="sizeType">
+          <enum>QSizePolicy::Fixed</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>20</width>
+           <height>4</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
        <item>
         <widget class="QGroupBox" name="browsersGroupBox">
          <property name="title">