Open source Nest implementation

ui: Fix navigation issues To get the bare minimum working, this change adds some basic navigation to the applicaiton. It's far from perfect, but nonetheless, it's something. :)

Created by  zj  on October 7, 2021
GD7FCQ2KD5YJQ3UDLAWNJQUAUK4LTHMPFVGHMUAWMKNIBYZWK2NAC
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