Add "mark read" in desktop chats

[vkjr]

Problem

Sometimes to many messages are shown as unread in a chat. If user not going to scroll to the top and read them all, he should have option to mark all messages as read.

Implementation

Acceptance Criteria

User can mark messages in a chat as read

Notes

Future Steps

[Swader]

@vkjr I think you mean "mark read" but "mark unread" would be cool too.

[vkjr]

@Swader, thanks for noticing, you are right, I meant "mark read" :)

[oskarth]

@flexsurfer @rachelhamlin I understand this might not be on the critical path. However, it's a much needed feature, so can we bounty it up please?

[annadanchenko]

@oskarth also see #7119

[0xc1c4da]

➤ Hester Bruikman commented:

cc Rachel Hamlin

[rachelhamlin]

FYI - we are putting a bounty on the mobile version of this feature, #6375.

[vkjr]

Cool, when desktop get mobile UI, this feature will be there automatically.