Replace sidebar/nav bar icons

[berkeleymobile]

Please reach out to Yani if you need a specific format for the icons

Calendar: use bottom right

Gyms: use top left

Campus Resources: use top left

Bear Maps: use top right

Dining: use bottom left

[rustielin]

@Sidthesquid another fun UI task for you? not sure if Yani planned an entire UI upgrade, since some of these light blue fill icons might look weird on our dark navy blue top nav bar