Merge pull request #24 from dsiker/append_comments_to_question

Append comments to question and answer question (AJAX)
css fix to partials for Q&A show page
add cannot comment if not logged_in
Merge pull request #25 from joelyawili/css_fixes_show_Q_and_As

css fix to partials for Q&A show page
change comments header to H2 tag
Merge pull request #26 from joelyawili/css_fixes_show_Q_and_As

change comments header to H2 tag
fixed merge conflict 2
fixed merge conflict 2