#4 building script to update tables in order to support resource_information for metadata
#2 created ResourceInformation classes and added database scripts. Added tests, still not working properly
#2 fixed annotation behaviour in ResourceInformationModel and test. Deletion test not concluded
#2 added resource_information_id collumn to resource_contact table in order to keep relationship and adapted models to it. Tests working successfully.
#2 removing unnecessary annotation on resource_information_id field
#2 added further tests to it
#2 Removed comments on getter/setter methods, formatted classes
#2 merged head content from dev branch and fixed conflicts
#2 reflected changes to the buffer schema