Sobolev norm and derivatvies ok

common/data/element.cpp

common/data/element.h

common/data/objective/objective.h

common/model/innerproduct/innerproduct.cpp

common/model/sweeper.h

convergence.cpp

directional.cpp

gradient.cpp

input/paper1/common.txt

input/paper1/synthetic_highly.txt

input/paper3/example4/common.txt

input/paper3/example4/multiscale.txt

input/paper3/example4/synthetics.txt

ip_comparison.cpp

multiscale.cpp

paper3_Chap1p1.py

paper3_Chap1p2.py

paper3_validation.py

specific/configuration/inclusion.cpp

specific/configuration/layerscylinders.cpp