[24145] Add separation between ticket owner and technician replies on tickets

[iskolares]

Customer is asking if we can add a bit of indication/separation on the ticket replies between the technician and ticket owner.

Here's a screenshot showing the UI they are suggesting

[Nness]

when move avatar to right side, it will cosume one column. This is timeline not chat.

change will be released on 14th Dec 2020, You can preview under /tech/staging.