Deprecate property GridView

Given that we have the properties GridGeometry and Grid it seems unnecessary to have GridView as well.

Suggestion:

• replace all GetPropType<TypeTag, Properties::GridView> by typename GetPropType<TypeTag, Properties::GridGeometry>::GridView
• replace GetPropType<TypeTag, Properties::GridView> by typename GetPropType<TypeTag, Properties::Grid>::LeafGridView where the above is not possible

Only disadvantage I can see: We cannot change from LeafGridView to LevelGridView by changing the GridView property but you need to change the GridGeometry property. Given that this feature is hardly ever used, it seems acceptable.