Patch 0.318a

- Changed the theme for the dungeon: "Forgotten tomb" to "cave". (was prison)
- Disabled the sun light source when you are inside a dungeon.
- The 'Set destination" UI can now also be moved with the directional keys.

- Fixed a bug where disconnecting in a dungeon would force you to to restart the game on the next reconnect.
- FIxed a bug where axe traps would not move.
- Fixed a bug where you would be considered underwater inside the dungeon.