Remove the update channel settings from the unbranded client (ownclou…

…d#8128)

changelog/unreleased/8127

@@ -0,0 +1,8 @@
+Change: Remove update channels from the ownCloud client
+
+To ensure a maximum of stability user should not replace their productive client with a preview build.
+For that exact reason we offer tespilotcloud clients, they can be installed in parallel and updated via the beta channel.
+
+If a user is more adventures than the average a manual install of a preview is always possible.
+
+https://github.com/owncloud/client/issues/8127

src/gui/generalsettings.cpp

@@ -103,21 +103,23 @@ GeneralSettings::GeneralSettings(QWidget *parent)
     connect(AccountManager::instance(), &AccountManager::accountAdded, this, &GeneralSettings::loadMiscSettings);
 
     // Only our standard brandings currently support beta channel
-    Theme *theme = Theme::instance();
-    if (theme->appName() != QLatin1String("ownCloud") && theme->appName() != QLatin1String("testpilotcloud") ) {
+    if (Theme::instance()->appName() != QLatin1String("testpilotcloud")) {
 #ifdef Q_OS_MAC
         // Because we don't have any statusString from the SparkleUpdater anyway we can hide the whole thing
         _ui->updaterWidget->hide();
 #else
         _ui->updateChannelLabel->hide();
         _ui->updateChannel->hide();
+        if (ConfigFile().updateChannel() != QLatin1String("stable")) {
+            ConfigFile().setUpdateChannel(QStringLiteral("stable"));
+        }
 #endif
     }
 
     _ui->versionLabel->setText(QStringLiteral("<a href='%1'>%1</a>").arg(MIRALL_VERSION_STRING));
     QObject::connect(_ui->versionLabel, &QLabel::linkActivated, this, &GeneralSettings::showAbout);
 
-    if (!theme->aboutShowCopyright()) {
+    if (!Theme::instance()->aboutShowCopyright()) {
         _ui->copyrightLabelDotBefore->hide();
         _ui->copyrightLabel->hide();
     }