- fixed issue on bulk action being run even without any items selected
- added WP like feature regarding item selection, if all items are checked, it also checks the header/footer checkboxes
- fixed issue where the selection state was not properly reset
- added List column to subscribers
- added json_encode/json_decode to Twig
- reorganized jquery validation lib to include languages
- added Widget initializer class
- fixed cache method in initializer
- added widget front JS to validate and submit (ajax / post)
