Upgrade to FontAwesome 5.0

[aeksco]

We're currently using FontAwesome 4.7.

See FontAwesome 5 icons here.

Steps

• Begin by following the TASK comments in observatory-client/index.html This will enable FontAwesome 5.0 and disable FontAwesome 4.7.

• Search through the repository's *.vue files for <i> tags with the fa CSS class.

• If an icon is missing from FA 5.0, it will display a little warning icon (see attached) indicating that the icon being used has been deprecated. Search for a suitable replacement on the FA 5.0 icons page and update the <i> element accordingly.

Missing Sort icon warning indicator

[aeksco]

Note - this ticket will be assigned to Joanna Detweiler (jell0s) when she joins the RCOS GitHub organization.