Fixing issue with PHP 5.4.

Gotta set up those classes!
Upgrading code.

- Syntax updates
- Fixes for PHP 5.4
- Misc fixes
Fixing error with missing $ci class object in Snippets.
Fixing old js call.
Make snippet parameters to form_output tag.
Add support for different editors in WYSIWYG snippet.
Updating image snippet to work with the Files::upload function.

This way, it'll support cloud files.
Updating readme.