OSB-31: improving interaction with the multiselect component, and added error type selection in the station overview

OSB-32: added additional filter field in the api requests to select the error types and url generation for the RTSM plots

OSB-31: restyling of the tooltip percentage field and on mouse over behavior  src/components/StationTestView.js

OSB-31: restyling of the station overview, fixing issue with the popover in the main screen and errors in changing the state when selecting a station