Add a view of files with their containing projects.
Add views of sage, non-sage users.
Remove the group column.
Add view of public, private nodes.
Add a view of public nodes.
Add a report of file uploads.
Organize for better output for the report.
Changes for code review.
One more optimization per code review.
Fix the OR clauses.
Merge pull request #1 from eric-wu/master

Adding views for audit reports