Fix: incorrect PropelORMFieldGuesser::getRelation() return value
Fix: incorrect PropelORMFieldGuesser::getRelation() return value

The PropelORMFieldGuesser::getRelation() did not consider the plural
form of the relation names, which could lead to incorrect results.

Restless-ET/AdmingeneratorGeneratorBundle,Restless-ET/AdmingeneratorGeneratorBundle,Restless-ET/AdmingeneratorGeneratorBundle,symfony2admingenerator/AdmingeneratorGeneratorBundle,symfony2admingenerator/AdmingeneratorGeneratorBundle