StudioWelcome: Use TitilliumWeb as application font

If the plugin is enabled we use TitilliumWeb as application font.

Change-Id: I8688c8c790705ac0d0556713319fe5b9079b5ce8
Reviewed-by: Brook Cronin <brook.cronin@qt.io>
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/studiowelcome/studiowelcomeplugin.cpp

@@ -189,6 +189,12 @@ bool StudioWelcomePlugin::initialize(const QStringList &arguments, QString *erro
     qmlRegisterType<ProjectModel>("projectmodel", 1, 0, "ProjectModel");
 
     m_welcomeMode = new WelcomeMode;
+
+    QFontDatabase fonts;
+    QFontDatabase::addApplicationFont(":/studiofonts/TitilliumWeb-Regular.ttf");
+    QFont systemFont("Titillium Web", QApplication::font().pointSize());
+    QApplication::setFont(systemFont);
+
     return true;
 }