Fixing iss4 and part of iss3

-Automatically passing name args if modulename is present
-Removing map.js and adding plain_map.js and isometric_map.js
-Checking arguments on loaders and throwing exceptions when not enough args
-Heavy refactoring tilemap.js
-Adding orthografic_camera.js
-Adding some newlines at end of files
-async_download is accesible at enviroment.async_download
-level/flatland.json works!!
-map format changed a little bit