Also show the window on right click

Note this won't work on all platforms. KDE Plasma and GNOME Shell (with
systray extension) assume that right click is necessarily for a context
menu exposed via D-Bus, there's not nice way to make the right click
popup the main dialog on those platforms.

Signed-off-by: Kevin Ottens <kevin.ottens@nextcloud.com>

src/gui/owncloudgui.cpp

@@ -156,9 +156,7 @@ void ownCloudGui::slotOpenSettingsDialog()
 
 void ownCloudGui::slotTrayClicked(QSystemTrayIcon::ActivationReason reason)
 {
-
-    // Left click
-    if (reason == QSystemTrayIcon::Trigger) {
+    if (reason == QSystemTrayIcon::Trigger || reason == QSystemTrayIcon::Context) {
         if (OwncloudSetupWizard::bringWizardToFrontIfVisible()) {
             // brought wizard to front
         } else if (_shareDialogs.size() > 0) {