Improve chat logic

[RobinMoRi]

• [ ] Update global state, setters and getters (w. inject, reactive..)
• [x] Add loading spinners
• [ ] Add error handling and validation on form
• [x] Fix intro-screen in chat-bubble
• [ ] Possible to implement websocket instead of polling?
• [x] Emojis
• [x] responsiveness
• [x] Close button in header for mobile view
• [x] Create better ip-tracking logic