DSB Version 0.32

[Sophia]

What's new:

- Default wallset is now an ext wallset (and looks nicer)
- Save games can now be named to remember which is which
- Added ability to be a trigger to base Lua code for stairs
- Rendering near_side views got broken somewhere along the line, now fixed
- Fixed a crash when attempting to draw animated wallitems
- Fixed some other minor but ugly rendering bugs
- Added "ambient_sound" arch to base code to make ambient sound easier
- Added "no_stopclicks" flag to monster archs (lets you pick up items underneath)