Hotfix: Fixes errors when trying to throw entities with invalid physobjects in (bugbait etc) and fixed decal crash (but decals no longer work on the interior).

Multiplayer hotfix for 'Couldn't include file 'worldportals\teleport_cl.lua' (File not found) (@lua/autorun/worldportals_init.lua (line 20))'

Portals are now actually portals

When the doors are open, the portals are active and can be walked through. Added utility function Exterior:DoorOpen. Added entity hook ToggleDoor. Moved door code into sh_doors. Set interior owner. E now toggles door, Alt-E teleports in. Slightly adjusted portal positions and sizes. Portal only renders when door is open, greatly improving performance. Prevented physgun being able to pick up the interior. Added spawnicon. Added addon.json for workshop.

Testing update batch file

Initial Commit