More Weapons Work

I'm still working on the Ship Weapons page.  I've got it so you can install weapons from cargo into available turrets, and now I'm doing some work on items in general to actually require time to elapse while items are being transferred from cargo into a turret or back to cargo.  This will also let me finish up the cargo transfers and means a lot of the work will already be done once I start coding up the Market buys and sells.  Some of the same code will also be used once I start working on Manufacturing, so this is all significant progress that I'm making.