[Frontend] Navbar is Broken on some Device Dimensions

[Clawber]

Navbar doesn't show all options on tall screen ratios

How to solve:
Responsive web design
Add CSS breakpoints (media queries)
add hamburger menu

[Clawber]

TODO (feel free to edit):
[ ] website design in other aspect ratios

Create all the changes in this branch
https://github.com/Clawber/JeePS/tree/5-frontend-navbar-breakpoints

Create a pull request after, and then merge