more intuitive features on frontend

[dunland]

• display building stats on frontend? → at least make building info more intuitive (after selecting a building, provide a better insight on the house data for the user)
• color token → coherent coloring of user group
  • on infoscreen: in combined emissions / energy cost graphs
  • on infoscreen: individual data view
  • stroke selected building
• merge buildings_interaction with data_view_individual:
  • frontend
  • infoscreen

[dunland]

• display house information on frontend canvas, without overlap of other buildings! → users shall not be forced to look up to the infoscreen all the time