The modal is replaced by a customized text block
 which does allow for hover and click action by
 the visitor to filter by specialization.

Front page will now show the last four publications of
 the current issue of SciPost Physics. Also reconstructed
 the .panels to .cards.

Altered the message alert class and positioned it absolute to
 the body to have floating messages.

The styling of the homepage is back to the styling of the `master`
 branch, but responsive. Needs detailed styling edits for i.e.
 the mobile menu.

Update and configure to Webpack@2.x
 and install Bootstrap@4.0.0@beta-6
 loader. Configured to start using
 .scss files.