[linearelliptic.discretizations.cg] updated names
[discretizations.base] updated logging
some updates bc. of changes in dune-gdt
[linearelliptic.discretizations...swipdg] added energy product
[linearelliptic.estimators.block-swipdg] added logging
[linearelliptic.estimators.swipdg] cleaned up includes
[linearelliptic.discretizations.block-swipdg] added boundary L2 product
[linearelliptic.discretizations.block-swipdg] added elliptic product
[cmake] whitespace
[examples.linearelliptic.OS2014] added first draft
[examples.linearelliptic.OS2014] added python bindings
[examples.linearelliptic.OS2014] added first draft of main
[examples.linearelliptic.OS2014] added error computation and estimation
[examples.linearelliptic.OS2014] updated bindings