[cmake] do not default to DEBUG build
Merge branch 'master' into OS2014
[linearelliptic.discretizations.block-swipdg] clean up dead code
[examples.linearelliptic.OS2014] add local error estimation
[examples.linearelliptic.OS2014] bind solve_for_local_correction()
[examples.linearelliptic.OS2014] add first draft of online phase
[examples.linearelliptic.OS2014] fix dorfler marking
[linearelliptic...block-swipdg] mark solve_for_local_correction() untrusted
[linearelliptic...block-swipdg] add get_local_discretization()
[linearelliptic...block-swipdg] add oversampled discretizations
[linearelliptic.problems.default] add ConvertToDefault
[linearelliptic.problems.OS2014] add LocalThermalblock
[linearelliptic.testcases.OS2014] add LocalThermalblockBlock
[examples.linearelliptic.OS2014] add LocalThermalblockExample
[examples.linearelliptic.OS2014] add projections, remove jump norm
[examples.linearelliptic.OS2014] add solve_oversampled()
[examples...OS2014] bind local and oversampled discretizations
[eamples...OS2014] do not bind jump_norm
[examples...OS2014] bind projections
[examples...OS2014] bind solve_oversampled