Messages: Setting to Always Display Time Stamp? Is it possible to display the Time Stamp of messages by default in both the Desktop Messages app, and the mobile app? 

This is the default view: 



Obviously, the time stamps are viewable by hovering the mouse over a message for the desktop version, or swiping left in the mobile app.  

But having them always displayed without the mouseover popup like this: 



http://www.macissues.com/2014/04/28/view-timestamps-in-messages-on-your-mac-and-iphone/

Would make far more sense. There doesn't seem to be a setting to always show the time stamp in either Messages.App or Messages for iOS, and I'm aware this doesn't seem to be an Apple-supported option, but perhaps it would be achievable through Terminal or an add-in.
They are displayed by default, as well in the left navigation panel as in the messages list on the right side....