Merge branch 'feature/agregar_valores_relationship_evento' into 'develop'

se agrega el contendio de los objetos en el serializer

Feature:
-Recuperar el contendio de relationship en endpoint evento

test resultado:
 ======================================================================================================== 3 passed in 2.49s ========================================================================================================

See merge request !4

 from rest_framework_json_api import serializers
 
-from .models import Evento
+from .models import Evento, FechaEvento
+from organismo.serializers import OrganismoSerializer, DependenciaSerializer
+
+
+class FechaEventoSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = FechaEvento
+        fields = serializers.ALL_FIELDS
 
 
 class EventoSerializer(serializers.ModelSerializer):
+    organismo = OrganismoSerializer(many=True, read_only=True)
+    dependencia = DependenciaSerializer(many=True, read_only=True)
+    fechas = FechaEventoSerializer(many=True, read_only=True)
+
     class Meta:
         model = Evento
         fields = (