Put detailed field information in help element

Instead of putting detailed information about the data set form
fields in the field label, put it in a help element.

Addresses #583
Don't set makeRequired when forms not loaded

Don't import utility function makeRequired if we're not loading forms.
This is the case in the story viewer.

Addresses #583
Fix styling of data set links in viewer

Section title styles were conflicting with the data set title styles.

Addresses #583