ignore "selected" class on ghost items in autosuggest controls

don't allow "selected" class (added by third party autoSuggest plugin) to change appearance of a ghost item since the implied behavior (deletion of the item) isn't supported
don't override `selected` styles if ghost item really is selected
comment to explain style overrides
Merge branch 'shareSearch' of github.com:sathomas/3akai-ux into shareSearch
Improved documentation