Release: 104 - Walls, doors and hatches placement — Boundless Steam update #667895

New Features: Walls and doors can now be placed on either the near or far side of a block depending on which side is selected. Walls, hatches and doors are now placed against a block's side. Doors are always placed with the axis on the left unless they are placed up against a block or another door (to make a double door). Fixes: Discovery server attempts to find out a users backing level when they login, and if found adds it to the users database. Added a version number to the start up screen to help us track down bugs.