make chat more newbie-friendly

[xDashh]

• new modifiers need some UI to explain / list them
• some other functions as easy as the existence of e.g. /help command should be better promoted
  • there are some randomized help-messages that load but not sure if people really notice them...
  • ... so make them more noticable? - maybe a more prominent color. ATM it really seems like the only place new users do learn advanced chat usage from.
• investigate borrowing ideas for emote (autocomplete?) stuff from e.g. Discord

[xDashh]

One more request somewhat regarding this:

• hold shift and click emotes to enter multiple without closing the emote tab like discord does