Img alias

* Added img tag alias
Li alias

* Added li tag alias
Forms, input alias

* Form input alias returns the input
Image size

* Fixed image canvas size handling
Fatal error page title

* Added english fatal error image title instead of 'l_error'
Image, to_html, default size

* Added default dimensions for image
Template, to_html, code minification
Forms, null values

* DateTime null values fix