changed fieldname 'row_id' to 'foreign_key'
now allows fallbacks for not-existing translations by setting model's locale to array of locales
model used for hasMany associations and for saving/deleting of translation records is configurable by Model::$translateModel property, db field 'i18n.field' is configurable by property $displayField of this custom model, instance of this model is obtainable by $this->ModelName->translateModel()
Added tests for translate behavior.
Added i18n shell script
Correcting translation function calls in various files
git-svn-id: https://svn.cakephp.org/repo/branches/1.2.x.x@5669 3807eeeb-6ff5-0310-8944-8be069107fe0
