Don't require file extension in wad console command
Requiring typing extension in wad console command is annoying. Odamex should try adding the extension if file isn't found. At least ".wad", same as with "-file" cmdline argument.
Pipe dreams: filename tab completion.
I think the reason this was intentional is so that there can be differentiation between files that are named the same but end with different extensions. Exmaple: av.wad and av.deh.