Friends needs some attention, due to accepted / non accepted requests

TODO:
    - Encrypt the metadata used for message notifications
    - Add notifications when friend requests are accepted/rejected

Add back button to QR Reader page

Fix bugs created after changing endpoints for tests
Build for iOS

TODO: Change server URL on login. This will only affect new devices with
existing users, so will be done later.

Add change password screen and endpoint

Added custom error message for when interactions fail

WIP - Creating conversations

Add data seeders for testing