Cleaned old reference to mongo database api
(cherry picked from commit 56a37dc)
(cherry picked from commit 53e1598)
Merge branch 'release-0.2.8'

Conflicts:
	CHANGELOG
	VERSION
Data quality question
updated to epidemics scripts
updated epi scripts
Fixed some data quality question minor bugs
Fixed duplicate fields in queries
researchers and developers can be now served different config file
Data quality question now has a retrieval endpoint
Added bulk insert capability to named queries
Fixed some minor bugs and improved data quality endpoint performance
Merge branch 'devel' of https://github.com/MIT-Model-Open-Data-and-Identity-System/SensibleData-Service into devel
Fixed some minor bugs and improved data quality endpoint performance
Merge branch 'devel' of https://github.com/MIT-Model-Open-Data-and-Identity-System/SensibleData-Service into devel

Conflicts:
	sensible_data_service/questions/available_questions/data_quality_question.py
Merge branch 'devel' of https://github.com/MIT-Model-Open-Data-and-Identity-System/SensibleData-Service into devel
Modified changelog
Merge branch 'devel' into release-0.2.8
Merge branch 'release-0.2.8'
Merge branch 'master' into production_sensibledtu1k