Bottom navbar and new top navbar

[Process-ing]

Closes #819, closes #1066
The bottom navbar is based on the new redesign of the app, so the pages don't fully match. I also took the freedom to refactor all the pages with the new top navbar style, although it will be probably scrapped for most pages

Review checklist

• Terms and conditions reflect the current change
• Contains enough appropriate tests
• If aimed at production, writes a new summary in whatsnew/whatsnew-pt-PT
• Properly adds an entry in changelog.md with the change
• If PR includes UI updates/additions, its description has screenshots
• Behavior is as expected
• Clean, well-structured code

[bdmendes]

I like the implementation quite a lot.
Two nitpicks:

1. Does it make sense that the navbar items are in the utils directory?
2. We are now referencing routes in even more places: besides on card tap actions and drawer links, we now have bottom nav bar links. Can we encapsulate a route in a enum with a string?

[Process-ing]

1. If we think that the navigation drawer items are in the utils directory too, I think it makes sense.
2. I totally agree with this. I think we shouldn't have stored the routes' names with the drawer items in the first place, though it didn't seem relevant for the objective of this issue. I can do this in this pr too if you'd like.

[codecov]

Codecov Report

Merging #902 (142741e) into develop (c208f9e) will increase coverage by 1%.
The diff coverage is 34%.

Additional details and impacted files

@@          Coverage Diff           @@
##           develop   #902   +/-   ##
======================================
+ Coverage       16%    16%   +1%     
======================================
  Files          225    227    +2     
  Lines         6851   6839   -12     
======================================
+ Hits          1053   1062    +9     
+ Misses        5798   5777   -21     

[bdmendes]

@Process-ing is this ready? If so, please undraft

[bdmendes]

(dummy request changes to avoid getting merged until the release)

[bdmendes]

From last design meeting, we'll probably end up with:

• Personal Area
• Academic Path (Schedule, Exams, Courses/Course Units)
• Faculty (Maps, Library, Utils)
• Restaurants
• Transports

[bdmendes]

@Process-ing can you update the PR screenshots with the new design?

Bug unrelated to this PR

[limwa]

LGTM 🚀

[LuisDuarte1]

🚀