Merge pull request #86 from nobeans/guide/theWebLayer/controllers/dataBinding.gdoc

translated additional part of guide/theWebLayer/controllers/dataBinding.gdoc for 2.3 and tweaked a little
updated original to latest.
translated guide/validation.gdoc
translated guide/validation/constraints.gdoc
translated guide/validation/validatingConstraints.gdoc
Merge pull request #87 from nttsoft/validation

translated guide/validation
translated guide/conf.gdoc
translated guide/conf/config/configGORM.gdoc
Merge pull request #88 from nttsoft/conf

translated guide/conf
translated guide/GORM/domainClasses/inheritanceInGORM.gdoc
Merge pull request #89 from nttsoft/guide/GORM/domainClasses/inheritanceInGORM.gdoc

translated guide/GORM/domainClasses/inheritanceInGORM.gdoc
translated guide/GORM/advancedGORMFeatures/ormdsl/customHibernateTypes.gdoc
tweaked titles for GORM in toc.yml