reimplemented dragging all field types

ui/checkboxex.cpp

@@ -20,13 +20,13 @@
 
 #include "checkboxex.h"
 
-#include "project/undo.h"
+#include "undo/undo.h"
 
 CheckboxEx::CheckboxEx(QWidget* parent) : QCheckBox(parent) {
 //	connect(this, SIGNAL(clicked(bool)), this, SLOT(checkbox_command()));
 }
 
 void CheckboxEx::checkbox_command() {
-	CheckboxCommand* c = new CheckboxCommand(this);
-	olive::UndoStack.push(c);
+  CheckboxCommand* c = new CheckboxCommand(this);
+  olive::UndoStack.push(c);
 }