Renamed building category to 'FURNITURE - Gutters'.
Several changes to building groups

Changed instances where ':' was used to '-' at building groups and furniture names to avoid a crash some people may get.

Changed instances where ':' was used to '-' at building groups and furniture names to avoid a crash some people may get.

Tweaked furniture names.

Small fix for Gutter Fabric Chest

* Changed MISC: GUTTER to MISC: Gutter.
* Renamed building group name for the Beak general storage chest.