Merge pull request #76 from Yonghui56/TH2C

Th2 c
add the definition of FemNodalFunctionMatrix
for now disable this part.
define the matrix to store the derivative and initialize them with zeros.
this is where the derivative should be calculated.
Merge branch 'TH2C' of https://github.com/HaibingShao/ogs_prototype into HaibingShao-TH2C

Conflicts:
	UserModules/FemCompMultiPhase/FunctionCMP_2P2C.hpp
	UserModules/FemCompMultiPhase/NonLinearCMP_2P2C_TimeODELocalAssembler.h
no message