Mobile app session experience optimized

Here's what's new in this update:

• Timer text update: We fixed the explanation text so you can hide the timer during rest periods or change how it shows up. Just press and hold the screen to hide it temporarily (it shows up again when you let go).
• Workout flow optimized: Circuits run smoother now, and feedbacks are only asked at the very end, no matter how long your rest is in each round.
• Mobile updates included: Now, any updates you make also pop up in the Gymkee mobile app notifications.