add hook in chat_controller
add some info to chat view
refactoring: move read_file feature to super class
change style for dn
add notification_area plugin
add online status plugin
add direct message plugin
add jira ticket link plugin
add profile setting plugin
add room list plugin
add omniauth crowd plugin
modify setting files
remove unused plugins
notify all room
increment counter only when receiving a message from others
desktop notification: notify only current room
notification area: modify css
prepare roomlist in plugin