Use colemak3 keys

part/pageview.cpp

@@ -2081,7 +2081,7 @@ void PageView::keyPressEvent(QKeyEvent *e)
     // move/scroll page by using keys
     switch ( e->key() )
     {
-        case Qt::Key_K:
+        case Qt::Key_E:
         case Qt::Key_Down:
         slotScrollDown( 3  /* go down 1 step */ );
         break;
@@ -2101,7 +2101,7 @@ void PageView::keyPressEvent(QKeyEvent *e)
         break;
 
     case Qt::Key_Left:
-    case Qt::Key_J:
+    case Qt::Key_N:
         if (horizontalScrollBar()->maximum() == 0) {
             // if we cannot scroll we go to the previous page vertically
             int next_page = d->document->currentPage() - viewColumns();