Added component for viewing the Brillouin Zone, added a uniform way of dealing with exceptions through React error boundaries (ErrorHandler.js), fixed small issues with plots and structureviewer.

Before merging you can check the functionality at: https://labdev-nomad.esc.rzg.mpg.de/dev/nomad/brillouin-zone/gui/entry/id/0w6CbOiCRg2sqWzTjO1Bew/skkhFDTWZHGcgva081IiIfts_Hh7/archive/section_run/section_single_configuration_calculation:0/section_k_band

I went with a radio button for toggling between the band structure plot and the Brillouin zone viewer. Radio buttons are a fairly standard way to switch between exclusive options so I felt it to be a better fit than a simple button or switch. What do you think?