fixing some bugs on Entity->loadAllObjects(), adding the update form generation, new loadBy function, wich takes an array instead of one field and one value. Called loadByArray()
adding base template for deleteForm in Twig engine.
Adding a [label] parameter for insertForm, updateForm and deleteForm twig template methods to specify the text shown by the submit button ('Valider' is the default value).
fixing a bug for the submit button label's display
adding database processing for the updateFrom method