Fix buttons on top bar not showing up as active

Fixed the bug causing the "My Projects" and "My Internships" buttons not showing up as active when clicked.

This bug was possibly introduced in https://gitlab.ewi.tudelft.nl/eip/bepsys/bepsys2/-/commit/72dc0ffe2bfdae00cfd8c8d43fa25efce48c3217.

Closes #277 (closed) and #273 (closed)