Tip of the Day (#3118)

* Basic tip of the day with sample widget added

* "Show tips on startup" option added to settings

* tip cycling implemented

* Structure of the tipOfTheDay class and resource created

* tip getter function modified

* Resources added, feature works properly

* clangified

* accidental modification rolled back

* zach cleanup

* tips to spaces; cmake list combined

* cleanup img

* fix copy

* remove TOTD as QObject so we can copy construct it

* prevent mem leaks in dlg

* changed order of 'next' and 'previous' buttons

* Date and tip numbers added; content wraps around

* useless sizepolicy removed

* link support added & clangified

* Initial tips & memory management updates

cockatrice/src/dlg_tip_of_the_day.h

@@ -0,0 +1,48 @@
+#ifndef DLG_TIPOFDAY_H
+#define DLG_TIPOFDAY_H
+
+#include <QComboBox>
+#include <QDialog>
+#include <QDialogButtonBox>
+#include <QHBoxLayout>
+#include <QLineEdit>
+#include <QPushButton>
+#include <QVBoxLayout>
+
+class QLabel;
+class QPushButton;
+class QCheckBox;
+class TipsOfTheDay;
+
+class DlgTipOfTheDay : public QDialog
+{
+    Q_OBJECT
+public:
+    explicit DlgTipOfTheDay(QWidget *parent = nullptr);
+    ~DlgTipOfTheDay() override;
+    bool successfulInit;
+signals:
+    void newTipRequested(int tipId);
+
+protected:
+    void resizeEvent(QResizeEvent *event) override;
+
+private:
+    unsigned int currentTip;
+    TipsOfTheDay *tipDatabase;
+    QLabel *title, *tipTextContent, *imageLabel, *tipNumber, *date;
+    QCheckBox *showTipsOnStartupCheck;
+    QPixmap *image;
+
+    QVBoxLayout *content, *mainLayout;
+    QDialogButtonBox *buttonBox;
+    QPushButton *nextButton, *previousButton;
+    QHBoxLayout *buttonBar;
+
+private slots:
+    void nextClicked();
+    void previousClicked();
+    void updateTip(int tipId);
+};
+
+#endif