add bigdata external source
Merge branch 'develop' of https://github.com/FalconSoft/Data-Management-Suite into develop
add local file for external ds
Merge branch 'develop' of https://github.com/FalconSoft/Data-Management-Suite into develop

Conflicts:
	Src/Data-Server/DataSources/SampleDataSources/FalconSoft.Data.Server.SampleDataSources.csproj
add files to project