Rename tracker.logging to tracker.logs

Closes ArchiveTeam/terroroftinytown#8
Use unicode-escape encoding for JSON on the done API

re: ArchiveTeam/terroroftinytown#4
services: Results must return body encoding or None.

re: ArchiveTeam/terroroftinytown#4
Bump client min version to 4

Closes ArchiveTeam/terroroftinytown#4
tracker: Security: Add @authenticated to delete project.
tracker: Use order_by random() to assign random projects.

re: ArchiveTeam/terroroftinytown#9
Merge branch 'master' of github.com:ArchiveTeam/terroroftinytown