- Added headers where they were missing

- Added comments where needed
- Beautified the code where needed, more readable and more compliant to CS
- loadResource function in helper fhc_helper.php is not using anymore CI
- Moved all constants from UDFWidget to UDFLib
- Added constant SORT to UDFLib
- Renamed constant REGEX_LANGUAGE to FE_REGEX_LANGUAGE in UDFLib
- Better formatting and indentation of the code of WidgetLib (more compliant to CS)
- Added missing validation attributes to HTML widgets
- Added constant HTML_DEFAULT_VALUE to CheckboxWidget
- Unset parameter multiple in DropdownWidget constructor
- Changed value of constant REQUIRED in widget HTMLWidget
- Added protected property $htmlParameters to widget HTMLWidget
  (it works as alias to $this->_args[HTMLWidget::HTML_ARG_NAME] -> better code)
- Replaced $this->_args[HTMLWidget::HTML_ARG_NAME] with $this->htmlParameters in the widgets
- Changed the CSS class label[udf-required=true]::after to label[required-field=true]::after in widgets.css
- Better use of constants in UDFWidget: constants from HTMLWidget are used only for the HTML parameters,
  while constants from UDFLib are used only for UDF parameters

application/widgets/html/CheckboxWidget.php

@@ -11,9 +11,11 @@ class CheckboxWidget extends HTMLWidget
 	const DESCRIPTION_FIELD = 'description';
 	// Value of value attribute of the checkbox
 	const CHECKBOX_VALUE = 'true';
+	// Default checkbox value
+	const HTML_DEFAULT_VALUE = false;
 	
 	/**
-	 * 
+	 * Loads the view that renders a checkbox
 	 */
 	protected function loadCheckboxView()
 	{