merging Wuzzy's empty weaponset for "new" button in weaponset editor

Add empty weapons scheme (instead of default) when using “New” button

merge more construction mode patches by Wuzzy

Construction Mode: Make weapon crate mode be initial selection in crate tool

Construction Mode: Don't update ticker for cursor keys when hedgehog is not under control anymore

Construction Mode: Reorder weapon and utility list to parrallel weapon menu order

Construction Mode: Fix landspray being considered a weapon instead of utility

in non-local games, don't include DLC-themes/maps/missions during random selection. thanks to unC0Rr for helping me realize that I was stupid in a different way than I thought :P

lupdate

fix for bug #117: Incorrect description of modifier “divide teams”