Ahaha. If it's not broken, fix it. If it is, fix it too.
Adds default value for total_correct on quiz_logs to prevent error
where first correct answer was discounted.
Added regression test for quiz not registering correct answer on first question.
Merge pull request #2328 from rtibbles/quiz_log_fixes

Fix to prevent first correct answer on a quiz not being counted in the total_correct field
Bug fix for #2334.
On server start, clear is_running on any old chronograph jobs.
Required import for clearing of is_running on Jobs.
Merge pull request #2337 from cpauya/feature/2334-Cannot-sync-server-on-Mac-to-central-server

Bug fix for #2334.
Merge pull request #2340 from learningequality/release-0.12.0

Release 0.12.0
Refactor Test object to make .all method available.
Fixes reference to testscache in api_resources.
add a get_test_object method for TestLog
use the total number of questions for showing the average for the exam coach reports
Tweak to avoid error when setting exam mode.
Merge pull request #2341 from learningequality/nalanda-rct2

Release Nalanda RCT2 updates
Merge pull request #2342 from learningequality/nalanda-prerelease

Nalanda prerelease