[ADD] slides gallery module

- Task: https://www.odoo.com/web?#id=9093&view_type=form&model=project.task
- Pad: https://pad.odoo.com/p/r.QlQTvBv6mCcMrK4B
encode url, to fixing server errors for e.g, like space within url paths.
when crawl perform test it don't encode url path like browser does when we enter path with space