Elide text from the right for all columns' header

Minimizing columns no longer truncates text from the left, now elides
text from the right for better readability. Done by setting header's
textElideMode to Qt::TextElideRight.

Fix issue #14419.
PR #15366.

src/gui/properties/trackerlistwidget.cpp

@@ -71,6 +71,7 @@ TrackerListWidget::TrackerListWidget(PropertiesWidget *properties)
     setItemsExpandable(false);
     setSelectionMode(QAbstractItemView::ExtendedSelection);
     header()->setStretchLastSection(false); // Must be set after loadSettings() in order to work
+    header()->setTextElideMode(Qt::ElideRight);
     // Ensure that at least one column is visible at all times
     if (visibleColumnsCount() == 0)
         setColumnHidden(COL_URL, false);