Fix unsetting user IPs through AWS
Fix psutil exception name on RS
Small cosmetic fixes to get_submissions
TV: add Dataset to cms.db

This commit is part of the series that introduces task versioning
TV: add SubmissionResult to cms.db

This commit is part of the series that introduces task versioning
TV: add UserTestResult to cms.db

This commit is part of the series that introduces task versioning
TV: make Job versioning-aware

This commit is part of the series that introduces task versioning
TV: make get_task_type versioning-aware

This commit is part of the series that introduces task versioning
TV: make get_score_type versioning-aware

This commit is part of the series that introduces task versioning
TV: make task_score versioning-aware

This commit is part of the series that introduces task versioning
TV: add get_submission_results to cms.service

This commit is part of the series that introduces task versioning
TV: add function to get the datasets ES and SS have to judge for a task

This commit is part of the series that introduces task versioning
TV: make EvaluationService versioning-aware

This commit is part of the series that introduces task versioning
TV: make ScoringService versioning-aware

This commit is part of the series that introduces task versioning
TV: make ContestWebServer versioning-aware

This commit is part of the series that introduces task versioning
TV: add Dataset handlers to AWS

This commit is part of the series that introduces task versioning
TV: fix the Manager and Testcase handlers of AWS

This commit is part of the series that introduces task versioning
TV: update AWS to use SubmissionResults

This commit is part of the series that introduces task versioning
TV: allow to see submissions on a certain dataset on AWS

This commit is part of the series that introduces task versioning
TV: fix and improve the client interface of AWS

Correct the messages shown in the worker and queue statuses.

Add more useful links.

Show textareas for score type parameters to make them easier to edit
(until we find a way to wrap them up nicely).

This commit is part of the series that introduces task versioning