update to 1.5.30
    
    - Update translations from zanata (de, pl, uk updated)
    - Use string order as a fallback to cldr_order in category listings
    - The rainbow flag should be a zwj sequence
    - Also display the Unicode version in the emoji info popover
    - When looking up emoji or other characters via Unicode codepoint,
      ignore surrogates and private use characters
    - Show the fonts really used to render an emoji in the
      info popover for the emoji
    - Fix typo in translatable string
    - itb_emoji.py: Use CLDR order to sort the candidates and
      the similar emoji if score is the same