Add q1, q2, q3, q4, q5 and q6 to select complex query in login_logs.
Initial fixes for `UserLog` and `VideoLog` filters during export data.
Set USER_LOG_SUMMARY_FREQUENCY to 1 day in main/settings.py.
Merge pull request #2742 from mrpau/hotfix/2271-Export-CSV-data-quality-issues

Hotfix/2271 export csv data quality issues
Revert "Hotfix/2271 export csv data quality issues"
Merge pull request #2747 from learningequality/revert-2742-hotfix/2271-Export-CSV-data-quality-issues

Revert "Hotfix/2271 export csv data quality issues"
Merge remote-tracking branch 'upstream/master'