Made changes to goat trader, to avoid a bug with other mods erasing their items.

* Colored backpacks can be properly crafted now.
* Tweaked blueprint prices to be more balanced and harder to get.

*Renamed building groups for better sorting.

* Tidied crafting list
* Container's building category renamed to better match my Building Category Tweak mod
* Added trader's medium and large backpacks

* Added colored backpacks to be crafted.
* Moved Leather Strips to STORAGE: Old
* Added UWE's storage system to Leather Strips.

'Storage: Leather Strips' moved to STORAGE: REFINED
'Backpack Storage' renamed to 'Storage: Backpacks' and moved to STORAGE: REFINED