Better delete function.
dd an array_first_key helper function.
Change rfwadmin map format to support subdirs, which means we support bukkit and multiworld formats. Fixes #10 .
Fix filename hint when uploading via POST.
Skip . and .. when iterating using readdir.
Fix map install from upload function.
Looking at the files for download in armory, the only file we can be sure exists in a map dir is level.dat.
Fix fetching armory updates.