Updates iOS samples;

Signed-off-by: Andreas Schacherbauer <andreas.schacherbauer@wikitude.com>
Updates Android samples;

Signed-off-by: Andreas Schacherbauer <andreas.schacherbauer@wikitude.com>
Updates sample application MainWindow to include new samples;

Signed-off-by: Andreas Schacherbauer <andreas.schacherbauer@wikitude.com>