Split X/26 packet handling into intermediate class

pagex26base holds methods for converting between the enhancements
QList and teletext packets. A future page subclass for POP pages will
re-use those same methods.

levelonepage.h

@@ -22,17 +22,15 @@
 
 #include <QByteArray>
 #include <QColor>
-#include <QList>
 #include <QObject>
 #include <QString>
 
-#include "pagebase.h"
+#include "pagex26base.h"
 #include "x26triplets.h"
 
 QColor CLUTtoQColor(int myColour);
 
-// If we inherit from QObject then we can't copy construct, so "make a new subpage that's a copy of this one" wouldn't work
-class LevelOnePage : public PageBase //: public QObject
+class LevelOnePage : public PageX26Base //: public QObject
 {
 	//Q_OBJECT
 
@@ -126,9 +124,6 @@ private:
 		int pageNumber, subPageCodes;
 	} m_composeLink[8];
 
-	QList<X26Triplet> m_enhancements;
-	X26Triplet m_paddingX26Triplet;
-
 	const int m_defaultCLUT[32] = {
 		0x000, 0xf00, 0x0f0, 0xff0, 0x00f, 0xf0f, 0x0ff, 0xfff,
 		0x000, 0x700, 0x070, 0x770, 0x007, 0x707, 0x077, 0x777,