Banshee functionality demos

• A contact form via page forms.
• The captcha library.
• This page shows errors and messages generated by the framework.
• An invisible page, a private page and a non-existing page.
• The WYSIWYG CKEditor.
• GoogleMaps static map demo.
• A pagination library.
• An alphabetize library.
• A language-specific page demo.
• A PDF library.
• A graph library.
• A poll module.
• The posting library.
• The tablemanager library.
• The splitform library.
• UTF-8 character encoding.
• A library for input validation.
• Page with a help pop-up.