Audit handeling connection problems and packet loss gracefully

Due to the AJAX nature of the game, we need to make sure that clients who drop packets and/or lose connection will be able to participate.

• Handle the submit function in the renderer better, so that clients get feedback if their submit worked
• Make sure the client cant send the same submit twice for different prompts accidentally

added 2_Improvement 4_Network 4_UI 5_Server 5_WebClient labels

mentioned in merge request !15 (merged)

marked the checklist item Handle the submit function in the renderer better, so that clients get feedback if their submit worked as completed

marked the checklist item Make sure the client cant send the same submit twice for different prompts accidentally as completed

closed with merge request !15 (merged)

closed with commit 3c89c586