[properties][cleanup] deprecate property GridView and replace by...

What this MR does / why does DuMux need it:

• Deprecates the property GridView,
• replace all GetPropType<TypeTag, Properties::GridView> by typename GetPropType<TypeTag, Properties::GridGeometry>::GridView
  • where this does not work, replace by typename GetPropType<TypeTag, Properties::Grid>::LeafGridView
• update examples readme
• build tests
• run tests

Which issue this MR fixes: fixes #830 (closed)

Special notes for your reviewer:

• remember to update dumux-lecture accordingly later
• remember to update dumux-course accordingly later