Simple buttons are aligned to the start of the line

GUI/src/main/java/cz/fidentis/analyst/core/ControlPanelBuilder.java

@@ -283,7 +283,10 @@ public class ControlPanelBuilder {
      * @return This new GUI object
      */
     public JButton addButton(String caption, ActionListener action) {
-        return addButtonCustom(caption, action, new GridBagConstraints());
+        final GridBagConstraints c = new GridBagConstraints();
+        c.anchor = GridBagConstraints.LINE_START;
+        
+        return addButtonCustom(caption, action, c);
     }
 
     /**