improvements and moved many behavioral tools menu items to preferences

ui/columnedgridlayout.cpp

@@ -0,0 +1,34 @@
+#include "columnedgridlayout.h"
+
+ColumnedGridLayout::ColumnedGridLayout(QWidget* parent,
+                                       int maximum_columns) :
+  QGridLayout (parent),
+  maximum_columns_(maximum_columns)
+{
+}
+
+void ColumnedGridLayout::Add(QWidget *widget)
+{
+  if (maximum_columns_ > 0) {
+
+    int row = count() / maximum_columns_;
+    int column = count() % maximum_columns_;
+
+    addWidget(widget, row, column);
+
+  } else {
+
+    addWidget(widget);
+
+  }
+}
+
+int ColumnedGridLayout::MaximumColumns() const
+{
+  return maximum_columns_;
+}
+
+void ColumnedGridLayout::SetMaximumColumns(int maximum_columns)
+{
+  maximum_columns_ = maximum_columns;
+}