Rework English strings

[alissonlauffer]

The purpose of this pull request is to track the upcoming changes to strings to make them more consistent and better:

• Remove trailing whitespaces from line start and end of lines.
• Remove emojis from non keyboard strings, since we don't use emojis there (With some exceptions).
• Remove ( ) from help strings (E.g.: /setwarnsaction (ban/mute/kick)), since that may lead the user to wrongly use them.
• Remove trailing whitespaces before punctuation characters.
• Add punctuation at the end of some strings.
• "Rewrite" strings and fix grammar issues using a spell checker.
• Rename string keys with more meaningful and short names.
• Other misc changes.

Any additional suggestions are welcome.

[iiiiii1wepfj]

@alissonlauffer Hmm

[AndrielFR]

Thanks Alisson. 🙏🤝

[iiiiii1wepfj]

good