WebdawAwareUriSecurityFilter is not site aware and it can cause troubles when dealing with site aware acls. We should add new WebdawAwareSiteUriSecurityFilter which extends SiteUriSecurityFilter which is site aware, but we also need keep WebdawAwareUriSecurityFilter for CE.

This issue doesn't occure on 1.1.x (master) branch where instead of WebDAV-aware security filter is used webdav client callback