[Live] Fixing bug with data-action="live#update" and inside clickable elements

[weaverryan]

Q	A
Bug fix?	yes
New feature?	no
Tickets	None
License	MIT

Small bug fix:

<a
    data-action="live#update"
    data-model="name"
    data-value="Dan"
><span>Change name to Dan</span></a>

In this case, the "click" would actually happen on the span, which is event.target. Switched to event.currentTarget to get the element that the listener is actually attached to (the a).

Cheers!