Fixes 3 problems with deselecting items in an autocomplete field:
1. Keep track of whether items were in the offical suggestion list, or are newly created
tags and remove the "newly created tags" from the suggestion list when they are
deselected
2. Change the aria-role for the selected items list when items cannot be deselected (and
do not treat it like a multiselect list).
3. When leaving and returning focus to the selected items list, remember the last
active-descendant.
Stopped the keyboard navigation from completely deleting
list options when being deselected using keyboard navigation.
They are now returned to the list of available options to be
reselected.
Also remove the cross from the selected element when it is
a single select box.
The documentation comment for a template must now be marked with:
@template component/templatename
For it to be read by the template library. Previously it was looking for
the first "non gpl license" comment which was a bit random.
