* moved ComputerBoardComponent to Content.Shared
* made flatpacker accept computer boards
* made flatpack system and ui function with computer boards
* fixed it so that flatpacks of computers are correctly coloured to fit their computer board colour
* unhardcoded the computer flatpack assembly cost
* Combined GetFlatpackCreationCost(...) with GetflatpackCreationCostForComputer(...)
* removed code duplication in SharedFlatpackSystem
* removed code duplication from FlatpackCreatorMenu.xaml.cs
* remove code duplication from FlatpackSystem (on the server)
* fixed indentation error
