This changes the generation and forwarding of multi index types
and related information in the interfaces of the `PreBasis` and `PreBasisFactory`
and the implementation `DefaultGlobalBasis`.
In summary: The `PreBasis` now longer depends on the `MultiIndex` type
which allows to move all information about required size of the multi indices
to the `PreBasis`. Now the `DefaultGlobalBasis` is responsible to create
suitable indices for the `PreBasis` (instead of `makeBasis()`).
Changes in detail:

* Changes to `PreBasis`
  * The typedefs `PreBasis::MultiIndex` and `PreBasis::SizePrefix` are
    removed.
  * The `SizePrefix` argument type of `PreBasis::size()` is a now template parameter.
  * The `MultiIndex`-type is no longer handed to the `PreBasis`.
  * There are new constants `PreBasis::minMultiIndexSize` <=
    `PreBasis::maxMultiIndexSize` <= `PreBasis::multiIndexBufferSize`.
    They denote the minimal and maximal size of the handed out
    multi indices and the maximal intermediate size needed for
    building each multi index.
* Changes to `PreBasisFactory`
  * The `MultiIndex`-type is no longer a template argument of `PreBasisFactory::makePreBasis`.
  * `PreBasisFactory::requiredMultiIndexSize` is removed.
  * `PreBasisFactory` is now a simple callback supporting
    `preBasisFactory(gridView)` instead of
    `preBasisFactory.makePreBasis(gridView)`.
* Changes to `DefaultGlobalBasis` and `makeBasis` implementation:
  * `PreBasis` is build before `MultiIndex` type is constructed.
  * The `MultiIndex` type is constructed in the `DefaultGlobalBasis`
    instead of `makeBasis`.
  * `makeBasis<MultiIndex>` was removed. This could be re-added, if we
    make the `MultiIndex` and additional template parameter of
    `DefaultGlobalBasis` with the automatically generated type as
    default.