Remove font awesome

[dgarcia360]

Motivation

Deprecate Font Awesome now we have custom icons lib.

Also, use lib icons instead of fontawesome for the following extensions:

• https://fontawesome.com/v4/icon/external-link

  sphinx-scylladb-theme/sphinx_scylladb_theme/extensions/topic_box.py

  Line 87 in 566db08

  <i class="fa fa-external-link" aria-hidden="true"></i>

• https://fontawesome.com/v4/icon/check (similar one already in lib)

  sphinx-scylladb-theme/sphinx_scylladb_theme/__init__.py

  Line 78 in 566db08

  .. |v| replace:: :raw-html:`<i class="inline-icon fa fa-check" aria-hidden="true"></i>`

[dgarcia360]

More icons to replace that are missing in the current icons lib:

• https://fontawesome.com/v4/icon/external-link

a.reference.external:after {
  content: "\f08e";
}

• https://fontawesome.com/v4/icon/download

a.reference.download:after {
  content: "\f019";
}

[dgarcia360]

@kwiato Could you please update the font icons lib with the previous icons?

[kwiato]

The icons are already there. :)
Add @use "sass:map"; at the start of scss file and replace the code

a.reference.external:after {
  content: map.get($icons, "newtab");
}

a.reference.download:after {
  content: map.get($icons, "download");
}

Check:
<i class="icon-check"></i>