disbale drag and drop for chattab

src/mainwindow.ui

@@ -1636,8 +1636,17 @@
             <property name="editTriggers">
              <set>QAbstractItemView::NoEditTriggers</set>
             </property>
+            <property name="showDropIndicator" stdset="0">
+             <bool>false</bool>
+            </property>
+            <property name="dragDropMode">
+             <enum>QAbstractItemView::NoDragDrop</enum>
+            </property>
+            <property name="defaultDropAction">
+             <enum>Qt::IgnoreAction</enum>
+            </property>
             <property name="selectionMode">
-             <enum>QAbstractItemView::ContiguousSelection</enum>
+             <enum>QAbstractItemView::NoSelection</enum>
             </property>
             <property name="verticalScrollMode">
              <enum>QAbstractItemView::ScrollPerItem</enum>