Update jquery v3.3.1 to v3.4.0 (#2129)

* Update jquery v3.3.1 to v3.4.0
* Update `main.min.js`

Close #2127 

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Made Gumshoe contingent upon a TOC being present. This prevents a console error on pages without a TOC. (#2124)

Release 4.16.0 💎

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Improve search `input` semantics (#2123)

* Update search_form.html

Updates Issue #2122 by adding the correct input type and aria label.

* update search_form.html

should be area-placeholder. My mistake. Updates Issue #2122

* fix aria-placeholder

Updates issue #2123 with a typo found by @mmistakes for liquid syntax.

Close #2122

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

* 'master' of https://github.com/mmistakes/minimal-mistakes:
  Allow adding JavaScript files after the theme's (#2116)

Allow adding JavaScript files after the theme's (#2116)

Allow adding JavaScript files after those bundled in the theme

Close #2110 

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Add `max-width` Sass variable (#2093)

Fix table of contents active link styling

Add reference to Thai UI text strings

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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