Show read/unread status of messages in the inbox / message-list view

[avinassh]

Inbox just displays in the order latest message received in a thread, however it doesn't show whether a message has been read or not. It is difficult to distinguish/know as of now. And user has to check the message thread.

It would be also nice to show the first few characters of the message.

Also, whenever there is an unread new message, there should be some indication in the navbar