Changed Ref<->Author many-to-many association to a References<-ReferencesAuthors->Authors one-to-many/many-to-many association.
Also added a ReferencesAuthors->AuthorType many-to-one association. AuthorType can be "First Author" and "Corresponing Author".
Only changed the entities so far.
Completed transformation of the Ref<->Author many-to-many association to a References<-ReferencesAuthors->Authors one-to-many/many-to-many association.
Also modified the associated forms and other classes.
Merge branch 'master' of github.com:archie18/MeloLabEva.git