Sharing button action hook needs updating

[majick777]

Since the major change in template formatting and actions, this line does not work to add the sharing buttons to the question:

            add_action( 'dwqa-question-content-footer', array( $this, 'show_sharer') );    

Pretty sure it should now be this to be in the same place:

            add_action( 'dwqa_after_single_question_content', array( $this, 'show_sharer') );

Even then, the CSS does not seem to match up anymore either (when tested with DW Q&A Pro.)