Link 404 error checking

Sounds like something outside the scope of this module. I'd like to keep it small and focused, similar to other CCK fields. I've already pushed it a little bit by making 3 input fields all put together.

Now, this can still be done. We'll just need to make another module for it. I'll leave this issue open if anyone is up to the task, or wants to chip in a +1. We can transfer this issue to the new project queue when/if someone takes up the task.

Once again, another module. Field modules such as this one are concerned with only two things:

- Creating a field (or widget) for data entry
- Providing a default view for this data to be presented

Manipulation and organization of this data is all handled by other modules. Drupal as a whole is headed away from monolithic modules towards smaller, focused modules. In 5.0, we'll get the foundations for module dependecy checking and packages making this whole business a lot clearer. In the mean time we just have to deal with a really long list of installed modules in alphabetical order.

Sorry this isn't the module to implement extravegant features. We'll still leave this issue open for discussion on implementing this feature in a new module.