update pause layout in multiple layouts environment

--the new approach takes into account only the layout
appliedactivities and accepts also FreeActivities as
valid to be paused

app/layouts/synchronizer.cpp

@@ -455,17 +455,23 @@ void Synchronizer::hideAllViews()
 
 void Synchronizer::pauseLayout(QString layoutName)
 {
-    if (m_manager->memoryUsage() == MemoryUsage::MultipleLayouts) {
+    if (m_manager->memoryUsage() == MemoryUsage::MultipleLayouts) {        
         CentralLayout *layout = centralLayout(layoutName);
 
-        if (layout && !layout->activities().isEmpty()) {
+        if (layout->isOnAllActivities()) {
+            return;
+        }
+
+        QStringList appliedactivities = layout->appliedActivities();
+
+        if (layout && !appliedactivities.isEmpty()) {
             int i = 0;
 
-            for (const auto &activityId : layout->activities()) {
+            for (const auto &activityid : appliedactivities) {
                 //! Stopping the activities must be done asynchronous because otherwise
                 //! the activity manager cant close multiple activities
-                QTimer::singleShot(i * 1000, [this, activityId]() {
-                    m_activitiesController->stopActivity(activityId);
+                QTimer::singleShot(i * 1000, [this, activityid]() {
+                    m_activitiesController->stopActivity(activityid);
                 });
 
                 i = i + 1;

app/settings/handlers/tablayoutshandler.cpp

@@ -372,7 +372,9 @@ void TabLayouts::updatePerLayoutButtonsState()
 
     //! Pause Button - enabled
     if (m_layoutsController->inMultipleMode()) {
-        if (selectedLayout.isActive && !selectedLayout.isForFreeActivities() && m_corona->layoutsManager()->synchronizer()->runningActivities().count()>1) {
+        if (selectedLayout.isActive
+                && !selectedLayout.isOnAllActivities()
+                && m_corona->layoutsManager()->synchronizer()->runningActivities().count()>1) {
             setTwinProperty(m_pauseLayoutAction, TWINENABLED, true);
         } else {
             setTwinProperty(m_pauseLayoutAction, TWINENABLED, false);