Added EntityFramework package to Lisa.BlueJay.Data
Added entities for the database in project Lisa.BlueJay.Data.
Still a subject to change.
Added BlueJayContext, derived from the DbContext.
Changed relation principal by using the ForeignKey attribute on the Profile entity and removing the DossierId property.
Removed property "ProfileId" from the Dossier entity.
Changed the "DefaultConnection".
Added reference to Lisa.BlueJay.Data.
Merge branch 'feature/database' that contains the database entities and context.