Restricted file access when it exists in old versions of task or wiki document

mongoose Hey! I think there is strange access rules for restricted file. ### Steps to reproduce: 1. Load by User1 file and set it access level "No one" (file Id for example 12) 2. Make wiki with text `{F12}` by User1 3. Edit new wiki page (change all text or delete) by User1 4. Try to access file from User2: http://phabricator.dev/F12 - User2 has access to file even if it has "No one" access level. It happens because `{F12}` exists in old versions of wiki page and User1 can't do anything to hide his file only if he will restrict view access to entire wiki page. I think access level to file should be evaluated by current version of document, not older. It can be reproduced also in tasks.