Added a global message inbox for when there's no callsign selected

mainwindow.cpp

@@ -1390,7 +1390,8 @@ MainWindow::MainWindow(QDir const& temp_directory, bool multiple,
       displayActivity(true);
   });
 
-  auto historyAction = new QAction(QString("Message Inbox..."), ui->tableWidgetCalls);
+  auto historyAction = new QAction(QString("Show Message Inbox..."), ui->tableWidgetCalls);
+  connect(ui->actionShow_Message_Inbox, &QAction::triggered, historyAction, &QAction::trigger);
   connect(historyAction, &QAction::triggered, this, [this](){
       QString selectedCall = callsignSelected();
       if(selectedCall.isEmpty()){

mainwindow.ui

@@ -4722,6 +4722,7 @@ list. The list can be maintained in Settings (F2).</string>
     <addaction name="actionShow_Fullscreen"/>
     <addaction name="actionShow_Statusbar"/>
     <addaction name="actionShow_Tooltips"/>
+    <addaction name="actionShow_Message_Inbox"/>
     <addaction name="separator"/>
     <addaction name="actionReset_Window_Sizes"/>
    </widget>
@@ -5638,6 +5639,11 @@ list. The list can be maintained in Settings (F2).</string>
     <string>Set Offset...</string>
    </property>
   </action>
+  <action name="actionShow_Message_Inbox">
+   <property name="text">
+    <string>Show Message Inbox...</string>
+   </property>
+  </action>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <customwidgets>

messagewindow.cpp

@@ -3,6 +3,7 @@
 #include "moc_messagewindow.cpp"
 
 #include <QDateTime>
+#include <QMenu>
 
 #include "Radio.hpp"
 #include "keyeater.h"
@@ -49,7 +50,7 @@ MessageWindow::~MessageWindow()
 }
 
 void MessageWindow::setCall(const QString &call){
-    setWindowTitle(QString("Message History: %1").arg(call));
+    setWindowTitle(QString("Messages: %1").arg(call == "%" ? "All" : call));
 }
 
 void MessageWindow::populateMessages(QList<QPair<int, Message> > msgs){