Add UI Text for Thai Language (#2111)

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Added missing Hindi Translation of ui-text (#2105)

Due to unknown reason, Hindi translation of ui-text was missing (https://github.com/mmistakes/minimal-mistakes/issues/2101)
I have added it back from a previous pull request (https://github.com/mmistakes/minimal-mistakes/pull/1888)

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Merge branch 'master' of https://github.com/mmistakes/minimal-mistakes

Update Font Awesome (#2102)

REF: https://github.com/FortAwesome/Font-Awesome/blob/master/CHANGELOG.md

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Typos fix and including more words for pt-br (#2098)

I just fixed some typos PT-BR, included translations for words that were not translated and changed some words to better describe the tag's meaning. This is how I use it in my Portuguese blog.

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Updated vi-VN for some missing terms (#2097)

```yml
search_placeholder_text    : "Nhập từ khóa cần tìm..."
results_found              : "Kết quả tìm được"
back_to_top                : "Về đầu trang"
```

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Fix French translation typo (#2096)

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Fix figures when they are inside of a list (#2094)

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Replace jQuery Smooth Scroll with Smooth Scroll + Gumshoe (#2082)

* Replace jQuery Smooth Scroll with Smooth Scroll + Gumshoe
* Change smooth scrolling speed
* Set maximum smooth scroll duration
* Remove Font Awesome CSS Ppseudo elements attribute from JS script

Close #2050, close #2075

Add styling for GFM task lists

Close #2092

Adjust wording

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Update Google Universal Analytics to load async (#2079)