Allows sorting the members of the indicated element by the values of the
Add children to that generate click events and that have child
content, such as buttons. Add a data-key * attribute to each child element
that indicates which data-* attribute the children should be sorted on.
Note that all sorting is done numerically, unless the
'data-sort-type=alpha' attribute is set on the element generating the
click, in which case the sorting is done alphabetically.
Additionally a single child element can have a data-default attribute with
a value of 'up' or 'down' to indicate the default sorting that already
exists in the data.
||The id of the container element whose children are to be sorted.
An example usage, that will present two buttons to sort the contents of
<button data-key=clustersize data-default=down>Cluster Size </button>
<button data-key=stepsize data-sort-type=alpha>Name</button>
<div data-clustersize=10 data-name=foo></div>
<div data-clustersize=50 data-name=bar></div>