<feature/rest-activity-records> mark challenge attempts as nonsyn after new activity record appear #130
New version of ChallengeEngine
<feature/rest-activity-records> remove ActivityRecordService because ActivityRecord is a child object for Attempt, so attempt's service must persist records #138
<feature/rest-activity-records> Merge branch 'stable/0.1' into feature/rest-activity-records
<feature/rest-activity-records> change id types for domains objets #138
<feature/rest-activity-records> update sync flag challengeAttempt when store activity records #138
<feature/rest-activity-records> fix selection type #138