Suggestion: "Cancel" button for in-browser private messages

Right now there's no elegant way to get out of the in-browser encrypted message function. Adding a "Cancel" button that returns the user to their main profile page would give them an easy out.

Start by locating the in-browser encrypted message flow and the navigation used to return to the main profile page. Add a Cancel action there and verify that selecting it exits the message flow and returns to the profile without sending a message.

Written by the indexing model from the issue text.