Strip links from the contents of the colorbox_trigger fieldgroup, since links within links cause browser/rendering issues.

On second thought, rearranging CSS, putting padding back in, but renaming CSS files to fit the BAT-style scheme: base, admin, theme, so that themers can easily omit it

Remove padding from CSS, add documentation on adding that in the theme. Also add 'hidden' HTML5 attribute for cases where CSS is ignored, such as in a WYSIWYG

Refactored to change inline styling to CSS file, and hardcoded markup to theme functions. Help text improvements.