Merge branch 'bugfix-update-diff' into merge-test

# Conflicts:
#	ServerLMS/Systems/tools.h
#	ServerLMS/Systems/updatecontroller.h

ServerLMS/Data/PacketType.h

@@ -14,6 +14,8 @@ enum PacketType
     TYPE_XMLANSWER = 8,
     TYPE_QT = 9,
     TYPE_DISABLE = 11,
+    TYPE_UPDATE = 12,
+    TYPE_CHECK_VERSION = 13,
     TYPE_FILESIZE = 20,
 
      TYPE_XMLANSWER_MESSAGE_FOR_GUI = 90,

ServerLMS/Data/StreamingVersionData.h

@@ -13,6 +13,7 @@ public:
         this->viewName = viewName;
         this->createData = data;
         this->size = size;
+        this->isChangeable = true;
     }
     ~StreamingVersionData();
 
@@ -36,10 +37,21 @@ public:
     return size;
     }
 
+    bool getIsChangeable() const
+    {
+    return isChangeable;
+    }
+
+    void setIsChangeable(bool value)
+    {
+        isChangeable = value;
+    }
+
 private:
     QString absolutePath;
     QString viewName;
     QDateTime createData;
+    bool isChangeable;
     qint32 size;
 };