Cleanup test-*-all

Currently all three test-*-all tests execute tests in 1d-4d. However, some of the checks in 1d-3d are also executed via test-*x. Furthermore test-lagrange-all and test-raviarttomassimplex-all really take a long time. E.g. on my system when compiled with -O2 they are terminated due to a timeout after 10min and 5min. This is essentially due to testing up to order 5 in 4d. If we reduce the maximal tested order to 4 in 4d both tests pass in under 1min.

IMHO reducing dropping the 5th order check in 4d would be an improvement compared to the timeout which essentially implies that there's no test result at all.