change the auth logic of modif a ticket
fix bug of empty image upload in presave ticket
add flow of association latest created ticket with a signup account or login account
add errors login/ signup form feedback
Merge pull request #23 from YanshuoH/yhuang/association_ticket_user

Yhuang/association ticket user
add user ticket json page
add user ticket restful and mytickets display
Merge pull request #26 from YanshuoH/yhuang/restful_list

Yhuang/restful list
Merge pull request #29 from YanshuoH/view-yp

apply bootstrap on ticket form with image upload (#13)