fontawesome: upgrade to v5

[thelostone-mc]

Description

• Update font-awesome library to 5!
• Removed the old library and replaced it with the new one
• Followed the upgrade instructions as mentioned in the docs
• Updated the icons + css across the site

Checklist

• linter status: 100% pass
• changes don't break existing behavior
• commit message follows commit guidelines

Affected core subsystem(s)

Refers/Fixes

#593

[thelostone-mc]

@mkosowsk mind helping me with the review?

[codecov]

Codecov Report

Merging #635 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master    #635   +/-   ##
======================================
  Coverage    34.8%   34.8%           
======================================
  Files          90      90           
  Lines        5014    5014           
  Branches      572     572           
======================================
  Hits         1745    1745           
  Misses       3203    3203           
  Partials       66      66

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[mkosowsk]

@thelostone-mc sure will take a peak

[mkosowsk]

Code LGTM but did not test :D This PR has earned the 💪🏻🤠👍🏻Mitch Kosowski Seal of Approval™

For other reviewers, @thelostone-mc linked the docs but here is the relevant section on why there are a lot of icon name changes in this update upgrade:

[thelostone-mc]

@mbeacom looks good from our end !!

[mbeacom]

lgtm - I'll test this following the inline validation PRs and get it merged if 👌

[thelostone-mc]

@mbeacom rebased ^_^