LimitingADERDGSolver currently crashing with TBB and AMR

• Uniform grids: LimitingADERDGSolver fails assertion if TBB is switched on. Probably something with the status spreading with TBB. Seems to be solved now.

• Adaptive grids: LimitingADERDGSolver mesh update iterates forever

• Adaptive grids: LimitingADERDGSolver fails assertion. Probably something because of the new domain boundary treatment. (Not sure if this is still an issue.)