Ch 301: Add an affordance in the UI for personalizable fields

NOTE: Given that this is likely to change soon to an icon, I took the path of just adding a class and putting text directly in the CSS.  Normally I wouldn't do that, but it was going to be quite messy to go in and add it to the label fields (particularly for the image fieldset) and I didn't want to muck it up that much in this situation.