Editable Apartment Halls

To allow editing of apartment hallways, I removed the data that marked shared spaces as shared. Further testing showed that this does not affect any gameplay mechanics, as unmarked areas are still treated as shared spaces. Hallway editing is possible due to a bug (later shipped as an intended feature) that allows exterior editing in apartments; the ability to edit apartment windows was originally accidental.

This also fixes the issue of missing ceilings in the Chic Street apartments, which were broken by the Horse Ranch patch when custom ceilings were introduced.