B button problem on Manage Themes / Details screen.

[dkosmari]

Inside the Manage Themes screen, after pressing A on a theme to see the details:

• if you tap on the left arrow on the top right, you go back to the Manage Themes screen;
• if you press B to go back, you go all the way back out of the Manage Themes, to the main app screen.

The Download Themes screen doesn't have this problem.

[Xziip]

I will improve this in the next version.