- fixed validations on radio type
- fixed date format for months
- added custom fields storing on subscribe
- fixed date widget (select today's date)
- fixed validation on form widget
- added listing of custom fields in form editor
- ability to delete a custom field
- mades changes to the form editor in order to accomodate for the new custom fields system
- fix form editor bugs
- cleanup
- new form with default data
- load/save in form editor
- widgets -> settings form
- widgets -> shortcode for subscribers count
- widgets -> form rendering
- added useful filters to Subscribers (for status related search)
- refactor & cleanup
