add bucket feature

[VictoriqueMoe]

add buckets feature.

[nakedmcse]

First Draft of bucket admin pages basically works, but has some issues to be fixed:

1. Files don't show on first load - on changing page to stats and back then they do.
2. Stats page needs filtered

I removed access to the user password page, and to ban/unban IP when using a bucket token. Verified both still work when logged in normally.

This commit also contains a fix to createBucket - it would infinite loop when files were empty, which they are when you create a bucket.

Tested here with three files uploaded with a bucket and three not. Logged in normal shows 6, logged in using the bucket ID shows 3.

[nakedmcse]

Approved