Update event.py
Update view.html

"$.ajax({url:'/comments/add',type:'POST',data:{comment:$('#commentContent').val(),eventid:{{eventid}}}})"

add function to button
Merge branch 'patch-14' of https://github.com/sunnyhan26/iems5718
Merge branch 'patch-16' of https://github.com/sunnyhan26/iems5718
Update comment_func.py

modified addComment() and getCommentList
Merge branch 'patch-17' of https://github.com/sunnyhan26/iems5718
Bug fix