Map transition, poison, and more maps

A game update (v. 1.2.5) is now in effect. Below you can find a changelog:

• Add poison effect to the game (there are no weapons yet, that would use the effect)
• Door were added to maps, allowing transition between multiple maps. However, there are no textures, yet, so they are invisible for now, but can be used and appear in the right click menu
• Disable showing path nodes and collision rectangles
• Add login screen background and improve styles
• For registered players, position within the map is now saved automatically when a player logs out
• Add voice cover sfx for monster (when monster is hit)

We are still working on the project, and more game updates will come in the future.