Importable module with **static files** when running Odoo v11.0 with **python3** runs into following error 

Traceback (most recent call last):
  File "/home/odoo/code/odoo/addons/base_import_module/models/ir_module.py", line 126, in import_zipfile
    self._import_module(mod_name, path, force=force)
  File "/home/odoo/code/odoo/addons/base_import_module/models/ir_module.py", line 82, in _import_module
    url_path = url_path.decode(sys.getfilesystemencoding())
AttributeError: 'str' object has no attribute 'decode'


With Python3 Odoo code is trying to decode an object that is already decoded at https://github.com/odoo/odoo/blob/11.0/addons/base_import_module/models/ir_module.py#L82. 
[Line 82 in import module](https://github.com/odoo/odoo/blob/11.0/addons/base_import_module/models/ir_module.py#L82) will have a `str`, there is no need to decode from file system encoding anymore.

Thank You

addons/base_import_module/models/ir_module.py
if not module_file:
            raise Exception(_("No file sent."))
        if not zipfile.is_zipfile(module_file):
            raise UserError(_('File is not a zip file!'))
        success = []
        errors = dict()
        module_names = []
        with zipfile.ZipFile(module_file, "r") as z:
            for zf in z.filelist:
                if zf.file_size > MAX_FILE_SIZE:
                    raise UserError(_("File '%s' exceed maximum allowed file size") % zf.filename)
            with tempdir() as module_dir:
                import odoo.modules.module as module
                try:
                    module.ad_paths.append(module_dir)
                    z.extractall(module_dir)
                    dirs = [d for d in os.listdir(module_dir) if os.path.isdir(opj(module_dir, d))]
                    for mod_name in dirs:
                        module_names.append(mod_name)
                        try:
                            
                            path = opj(module_dir, mod_name)
                            self._import_module(mod_name, path, force=force)
                            success.append(mod_name)
                        except Exception as e:
                            _logger.exception('Error while importing module')
                            errors[mod_name] = exception_to_unicode(e)
                finally:
                    module.ad_paths.remove(module_dir)