Draft: Addition of the Publications tab hover feature

Fixes

Fixes for #1576 no by @vanshitaverma

Description

Type of PR This PR is a feature.

Technicalities

Changes in the files app/cake/templates/layout/default.php , dev/assets/sass/main.scss and webroot/assets/css/main.css

Tests

Hover over the publications tab

Screenshots

Checklist:

• My pull request has a descriptive title (not a vague title like "Update index.md").
• My pull request targets the phoenix/develop branch of the repository.
• My commit messages follow best practices.
• My code follows the established code style of the repository.
• I tried running the project locally and verified that there are no visible errors.