Add start and end points in polar plot in observation view, unify polar plots
This PR homogenizes the style of the polar plot in the obvservation view with the polar plot in the pass predictions table.
Preview:
The two colored circles in the rows above are created by CSS, I'm not sure if this is the correct way of doing it.
Inspired by IRC (thanks @chibill). ;)
Edited by Fabian P. Schmidt