baee20b279
This MR adds the ability to view, add, and delete emojis from notes and comments. This action can be performed by default with the `Ea` (emoji add) keybinding, and the `Ed` (emoji delete) keybinding. Only emojis added by the current user are eligible for deletion. The MR also implements a popup functionality which shows the user who added emojis on hover. Implements #179