UI: Send Message, Display Message

[cemreozen]

What:

• The implementation of the sendMessage functionality has to be completed including an intuitive input box, where the user types in the message they want to send.

How:

• The message display should be reminiscent of familiar messengers
  • The information contained in the messages should be able to be displayed on demand (possibly: in varying detail if wanted or needed).
• A button is to be added to handle encryption functionalities

Notes:

• The overloaded sendMessage methods should be considered during the implementation