add unread_count to user's subscribes.
add migration for unread count
normarize subscribe result
refactor
render unread count
add update read count job
add read-collection
mark unread post
add reads end point
delegate scroll event from post-list to post-item
listen read-collection's add event
remove bootstrap of reads
mv component-install from prepulish to postinstall
Merge pull request #40 from tazima/topic-unread-count

Topic unread count