Into the Abyss - WALL JUMP AND WALL SLIDIE!

Changelog:

• By pressing "t" you can now close inventory/teleport menu
• Wall climbing changed to wall jump(to perform walljump try walking into a wall while repeating to press jump button)
• Player can achieve wall sliding by performing a succesful walljump which allows to slide down walls at half the falling speed
  although it is impossible to shoot while wall sliding