Sub-folders

Now the xml files have to be directly into their folder. For subassembly packs (like the ones we are using for Real Engines) that causes a real mess.

We try to name all mod parts with ( name code ) so they are all in the same place, but once you add many it's hard to find them and delete the packs.

For this purpose, recursive file lookups would be really appreciated both in subassemblies and crafts, since that would allow for a cleaner file management in the device side (easier file sharing and management).

Additionally it would be nice is this file tree could be represented in-game, including an option to change that structure from within the game. The folder nesting devicewise would be a nice way to save the tree hierarchy, without the need of any xml index.