Form validators cleanup.
Engine: all Core code moved out.
Assets command moved to Core module.
Added assets installation via System installation request.
Helpers has been refactored.
Widgets storage has been refactored.
Translations refactored.
Added locale support. Now you can create different languages for different locales.
Added simple formatter helpers for view (number and currency formatters).
Added support for language Auto detect.
Added MenuItem constants.
Configuration separated by stages.
Added application command 'sync' that will allow developer to synchronize packages via different stages.
Modules and events information moved to static config file, that will be generated by system.
Packages manifest format changed to json.
Removed 'return' blank line before check from phpcs.
Added missing directory 'libraries'.
Added missing directory 'plugins'.
Fixed package upload.
Fixed toJson widgets select in package model.
Form class rewritten from scratch.
All forms refactored according to new Form class.
Implemented form partials: added 'default' and 'text'.
Implemented form conditions.
Implemented form fieldsets.
Implemented CkEditor element.
Implemented Button element.
Implemented ButtonLink element.
Implemented Heading element.
Implemented FileForm.
Implemented EntityForm (this will allow to created forms from entity on the fly).
Implemented multiple entities validation and saving support in normal form.
Added Image validator (size validation).
Added File MimeType validation.
Added assets inline code support.
Added some dochead methods for better IDE support.
Added assets helper for view.
Added some view functions: classof, instanceof, resolveView.
Fixed some packages structure errors.
Fixed exceptions double logging.
Corrected some css form styling.
Refactored js: added widgets, added js form support, better namespaces support (also in todo).
Fixed some issues with roles and languages as json in some models.
Fixed some issues founded in controller, related to forms logics.
Fixed phalconeyeAuthDriver in ajaxplorer.
Changelog has been updated.