Removed unused files
Removed shopping list plugin, created file for builder plugin
Added export to weights panel
Updated pawn stat mappings.
Rewrote import/export plugin so it now works on popups instead of an extra panel.
Share create new set drop down code between character and config UI.
Moved :SetSelectedSet into TopFit.lua
Moved constants into their own file.
Merged old ui.lua code into several more sensible places
Removed debug print.
Fixed progress frame always displaying.
TODO: test with long calculations