fixed bibitem for Kemper
coding style
Added example for IdealBasisOverCoefficientsRing
Merge branch 'master' of https://github.com/homalg-project/PrimaryDecomposition

# By Mohamed Barakat
# Via Mohamed Barakat
* 'master' of https://github.com/homalg-project/PrimaryDecomposition:
  fixed bibitem for Kemper