create wall with token
retrieve wall by token
auth by wall token
create message with wall_id
show wall token
add account and sign_in
create wall with current account
do not set background image if null
clean messages on the wall if messages are deleted entirely
display 50 messages at most if not specify duration
remove turbolinks
wall page title
add full screen button
change full screen button icon to star
add publishing status to messages
soft delete message
add message type
return sticky messages
create message with message type
cleanup useless codes