Add additional notes to cnMetabox_Render.
Remove extra div tag.
Adjust tab postion valies for SEO and Advance.

Also removed unused field settings.
Update jQuery Validation plugin.
Update min WP version to 3.5
Typecast string for ctype_digit().
Add support for custom settings field types.
Fix invalid index errors with imge/logo uploads.
Decrease priority of metabox registration.

This is so they will be registered before the settings fields.
Introduce the CN_License class.