Conditional -> GUIObject and make all gui objects children of GUIObject

Signed-off-by: Vojtech Bocek <vbocek@gmail.com>

Change-Id: Ic0a7d6354dabe5919b83942f2f1aa0715625e522
diff --git a/gui/input.cpp b/gui/input.cpp
index 4fd1d0e..e402074 100644
--- a/gui/input.cpp
+++ b/gui/input.cpp
@@ -47,7 +47,7 @@
 #include "../data.hpp"
 
 GUIInput::GUIInput(xml_node<>* node)
-	: Conditional(node)
+	: GUIObject(node)
 {
 	xml_attribute<>* attr;
 	xml_node<>* child;