Merge pull request #185 from wosiu/master

Serialization to protobuf added to disambiguation author workflow
Changes in model to store multiple collections and original keys after document disambiguation
Merge pull request #186 from acz-icm/master

Changes in model to store multiple collections and original keys
Fixed issue reported by Sonar.
Merge branch 'master' of https://github.com/CeON/CoAnSys