Minor Update - Wall — Piozila Steam update #455321

Fixed a bug where some objects could be moved through walls. Fixed a bug where some items got stuck when going to the next level, it was necessary to restart the level. Improved wall display algorithm, a wall will no longer be displayed if an object is behind it. In dream mode, a wall will be hidden if it is near the little chameleon. Small correction on the tutorial at the beginning. X or V is now the default way to rotate the camera, instead of using the mouse and the edge of the screen, can be changed in the menu. Dialogs will no longer appear when restarting a level, except for tutorials. A story mode button is already available in the menu, and allows you to activate or deactivate the dialogues in the game. The zoom will be reset and will no longer be available when activating dream mode. Background music loops have been reduced. Improved sheep movement.