* Port improvements to NanoChat from Einstein-Engines and Goob-Station
* fix duplicate translation key
* add missing space
* Properly mark DeltaV changes
* Allow muting individual NanoChat users, NanoChat UI to put per-chat buttons next to the message box
* remove leftover from testing stuff
* cycle through inputs with tab, confirm with enter; for new and edit chat
* Add channel switching with (Shift+)Alt+Up/Down; Discord-Style
* better null check
* another better null check
* Implement changes from ImpStation PR
* Rename ContactControl -> ContactContainer
* Requested changes
* Move Loc to _DV, don't register system as manager
* I'm so smart :)
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Co-authored-by: Alex C <alex91905@yahoo.com>
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