- Added system for readonlys: Readonly is passed in constructor as third parameter. If a widget class is registerd with "[type]_ro" (see et2_textbox for example) this one is created
- Added new 'valueWidget' base class which introduces the 'value' attribute and implements auto loading from the content array
- Implemented readonly attribute for buttons and textboxes
- Added test for textbox
- Added baseWidget and inputWidget classes
- Implemented attribute system
- Implemented statustext as a test for the attribute system
- Ported csv_split function to JS
- Implemented system for the legacy options
- Added function for iterating over the widget tree