Image Emojis: Emojis in chat

• Added ability to extend the Unicode range for emojis in the configuration:

# When you use over ~500 emojis you may see some emojis overlap each other (due to hashing function is limited to certain range)
# If you plan to use many emojis on your server, you may set this value to "true"
# IMPORTANT: Changing this will reset all existing emoji codes. This means:
#   - Previously written emojis on signs and item names will appear as invalid symbols
#   - Range will be increased from 2000 to 6400 available emoji unicode symbols
extendedUnicodeRange: false