[dune.module] update email
[space.interface] minor change
[space.continuouslagrange.fem-localfunctions]
use grid capabilities for static checks
replace quadrature_order by integrand_order
[operator.projections] updated L2 for dg.fem-localfunctions
[operator.projections] updated L2 for dg.fem-localfunctions
[playground.space.discontinuouslagrange.fem-localfunctions]
* updated to new interface
* use grid capabilities for static asserts
* disabled for dimDomain >= 2 or polOrder >= 1 bc some tests fail
[tests.space] reenabled tests for dg.fem-localfunctions
[tests.operators_products] reenabled dg.fem-localfunctions
* the L2 projection and prolonagtion do not work for dimDomain >= 2 or
  polOrder >= 1 (bc the local matrix is singular)