Add spec which is fixed with this commit.
In the `sTagsArea` zone there are two elements with the same `data-val`:
the `<span class="amsify-select-tag>` containing the selected tag and
the `<li class="amsify-list-item" data-val="1">` containing the
suggested tag.
This means every time we call `removeTag`, the `removeTagByItem`
function is called twice, and might remove extra items.
Suggested PR:
c8765a6915
f463baf14a