[linearelliptic.discretizations.block-swipdg] fix CouplingAssembler
[linearelliptic.estimators.swipdg] added LocalResidualESV2007Star
[linearelliptic.estimators.swipdg] minor clean up
[linearelliptic.estimators.swipdg] add LocalResidualESV2007Star to SWIPDG
[linearelliptic.estimators.block-swipdg] add LocalResidualOS2014StarBase
[linearelliptic.estimators.block-swipdg] add eta^T_r* to BlockSWIPDG
[linearelliptic.estimators.block-swipdg] use eta^T_r* in OS2014Star
[test.linearelliptic-block-swipdg-expectations] update
[linearelliptic.discretizations.block-swipdg] add 'penalty' product
[cmake] add_dune_superlu_flags to examples/linearelliptic
[cmake] simplify add_dune_..._flags() usage
[cmake] add_dune_tbb_flags()