Add null check for response parser of ConversationActivity
Modify not to register Friend info to FriendTable twice times when new message received
Update Friendship table in case the user read new message in ConversationActivity
Modify to handle latest message for Friendship table
Change to remove Notification only when all new messages are expired timing
Fix to show friend item on Conversation Activity
Fix TimeUtil to local text in Japanese case
Modify strings.xml for Japanese to avoid truncation in Invitation dialog
Update invitation_confirm_dialog.xml to set style correctly
Update layout xml files to set Edittext style
Update travis.xml and build.xml