Enumeration movable

Detaches the tree OrgChart.movable.detachTree = 'detachTree';

let chart = new OrgChart('#tree', {
 movable: OrgChart.movable.detachTree
});

Moves the node OrgChart.movable.node = 'node';

let chart = new OrgChart('#tree', {
 movable: OrgChart.movable.node
});

Moves the tree OrgChart.movable.tree = 'tree';

let chart = new OrgChart('#tree', {
 movable: OrgChart.movable.tree
});