feedback: notify upon feedback

Issue signalled by @VictoriaDemierbe :

Première chose, assez embêtante : nous ne recevons pas de notification quand l'autre a écrit un commentaire ou surligné un mot. Ce n'est donc pas facile de le repérer, comme nous avançons dans la discussion naturellement, sans toujours penser à revenir au message précédent pour voir s'il y avait une question, une correction, etc.

Solution:

• sound (ding) on feedback received
• and/or system notification (as for messages)?
• and/or attention grabber ( [!]> next to message ?)

changed milestone to %0.2: Essential functions ready & corrective feedback

added To do label

assigned to @bridubois

changed the description

added UX label

changed milestone to %0.2: Essential functions ready & corrective feedback

unassigned @bridubois

One solution I could think of would be to insert, in the discussion, a "meta message" to warn the user that a comment/underlining has been added, and a click on it would auto scroll to the message. Here is an example. What do you think?

Sounds really good to me!

added Open for discussion label and removed To do label

added To do label and removed Open for discussion label

assigned to @bridubois

closed with commit 012eb262

Here is the current version of the feature. For now, this is real-time only, which means that nothing is saved on the server, so a reload of the page lost all those "metadata". As it's intended for real time usage, I don't know if it's necessary to store and restore it? Also, who adds a feedback is not stored either. I don't feel that it's a very important information, as most of chats consists of only two persons. What's your opinion?

Also, a click on the feedback scroll to the related message and make it gray. If the text is longer than 20 characters, it is cropped.

mentioned in commit 012eb262