Add 'ordering' to 'Add a Subgroup'; Fix jQuery state of button after modal form submition; Fix jQuery state of radio button cleanup after modal form submition; Fix jQuery cleanup function to not remove hidden value in modal; Fix jQuery capture of radio input value; Add 'subgroup-identifier' to facilitate jQuery count of existing subgroups for subsequent passing to modal for new Subgroup with incremented 'ordering' value;  Add 'data-item-order' attribute to subgroup LI items to facilitate passing an incremented 'ordering' value to modal for new Item creation;  Add sort to subgroups and items (classes: eq_group.class.php, eq_subgroup.class.php);
Merge branch 'master' of https://github.com/williamscollege/eqreserve