Print: move some header includes to cpp files

We don't really need includes of display.h and dive.h in
printoptions.h and printlayout.h or forward declartions
of 'struct dive' and 'struct options' in there.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>

qt-ui/printlayout.cpp

@@ -6,6 +6,7 @@
 #include "mainwindow.h"
 #include "printlayout.h"
 #include "../dive.h"
+#include "../display.h"
 
 /*
 struct options {

qt-ui/printlayout.h

@@ -2,11 +2,9 @@
 #define PRINTLAYOUT_H
 
 #include <QPrinter>
-#include <QPainter>
-#include "../display.h"
+#include <QStringList>
 
 class PrintDialog;
-struct dive;
 
 class PrintLayout : public QObject {
 	Q_OBJECT

qt-ui/printoptions.cpp

@@ -1,5 +1,6 @@
 #include "printoptions.h"
 #include "ui_printoptions.h"
+#include "../display.h"
 
 PrintOptions::PrintOptions(QWidget *parent, struct options *printOpt)
 : ui( new Ui::PrintOptions())

qt-ui/printoptions.h

@@ -4,7 +4,6 @@
 #include <QWidget>
 #include <QSlider>
 #include <QLabel>
-#include "../display.h"
 
 namespace Ui {
 	class PrintOptions;