Climbing Block - Let's up Llam

Improve characters inventory.<br>You can now buy a random character directly from the shop. We added In-App purchase, if you really want a specific character.<br><br>We added write external storage permission to prevent data lost for some people with no more space available on their internal phone storage. If you have plenty of internal space storage on your phone you can refuse this one. ;)<br><br>Next step: bug fixing. thanks for your reports, we are on it ;)<br><br>Enjoy!