modify style for post-reply
 Show if plurk is replurkable
fix incorrect avatar url
show unread plurk
show locked plurk
show mute status
add reply link
style
show favorite plurk
add replurk link
add event on reply links
use base_url
remove redeclaration
implement mark_as_read function
mark as read after reading plurk
implement mute function
do not add links on favorite link
implement favorite
toggle favorite icon