R1:d5dfa5faf5c8

Never hide file contents if they have comments.

Summary:
Links to comments were not working because file was hidden after it was deleted.

Test Plan:
Tested that comment anchors were working correctly for deleted files.
Tested that generated files were still hidden.

Reviewed By: epriestley
Reviewers: epriestley
CC: jungejason, aran, epriestley
Differential Revision: 257