Add Valuator Groups list to investment csv & table

We've added the list of valuator groups assigned to each investment at
 both admin investment list and investment csv exported file

config/locales/en/admin.yml

@@ -171,6 +171,7 @@ en:
         assigned_admin: Assigned administrator
         no_admin_assigned: No admin assigned
         no_valuators_assigned: No valuators assigned
+        no_valuation_groups: No valuation groups assigned
         feasibility:
           feasible: "Feasible (%{price})"
           unfeasible: "Unfeasible"
@@ -182,6 +183,7 @@ en:
         table_supports: "Supports"
         table_admin: "Administrator"
         table_valuator: "Valuator"
+        table_valuation_group: "Valuation Group"
         table_geozone: "Scope of operation"
         table_feasibility: "Feasibility"
         table_valuation_finished: "Val. Fin."

config/locales/es/admin.yml

@@ -171,6 +171,7 @@ es:
         assigned_admin: Administrador asignado
         no_admin_assigned: Sin admin asignado
         no_valuators_assigned: Sin evaluador
+        no_valuation_groups: Sin grupos evaluadores
         feasibility:
           feasible: "Viable (%{price})"
           unfeasible: "Inviable"
@@ -182,6 +183,7 @@ es:
         table_supports: "Apoyos"
         table_admin: "Administrador"
         table_valuator: "Evaluador"
+        table_valuation_group: "Grupos evaluadores"
         table_geozone: "Ámbito de actuación"
         table_feasibility: "Viabilidad"
         table_valuation_finished: "Ev. Fin."