[bug] Paths to some static images in CSS doesn't play well with other file storage systems

[nemesifier]

These paths should be fixed:

openwisp-notifications/openwisp_notifications/static/openwisp-notifications/css/notifications.css

Lines 282 to 296 in fe2dda7

	.ow-notify-info {
	background-image: url('/static/openwisp-notifications/images/icons/icon-info.svg');
	}
	.ow-notify-warning {
	background-image: url('/static/openwisp-notifications/images/icons/icon-warning.svg');
	}
	.ow-notify-error {
	background-image: url('/static/openwisp-notifications/images/icons/icon-error.svg');
	}
	.ow-notify-success {
	background-image: url('/static/openwisp-notifications/images/icons/icon-success.svg');
	}
	.ow-notify-close {
	background-image: url('/static/openwisp-notifications/images/icons/icon-close.svg');
	}

@pandafy can you confirm whether you agree with this? It looks to me that with object storage these images are not shown.

[pandafy]

Yes, you are correct @nemesisdesign