Fixes content type icons and removes reference to tagsResource since it doesn't actually exist (Think Per hasn't checked it in yet)
Fixes issue with 'headline' when there is no content. Added client side validation to the content name.
Creates umb-content-name to share amongst editors so we have less html duplication.
Lots of work for validation. We have a different type of validation model in Umbraco where we still save content even if some things are invalid (we just don't publish) so we have to take all of this into account. We also have other rules where if it is new content but required fields like 'name' are empty we cannot continue to save. Also started working on dealing with server side validation errors for content fields (not just user defined fields).