Merge pull request #516 from endJunction/CreateDofMap

Create dof map
Merge pull request #517 from endJunction/Skeletons

Adds solve, post function skeletons for processes and calling them from main.
[PL] Add mesh node ids for BoundaryCondition.
[PL] Initialize node ids vec in boundary conditions.
[AL] Add LinearSolverType to GlobalSetup.

Used in NumericsConfig for coordination with global
matrix/vector types.
[PL] Add simple GWFprocess::post() writing result.
[PL] Add next steps for solve().
[PL] Add initialize debug message.
[PL] Add GlobalSetup as template to GW process.
[PL] Add global matrix and rhs/solution vectors.
Add LinearSolver to GWProcess.
GW: Make linear solver happy with identity matrix.
[PL] GW: Add vector of local assemblers.
Merge branches 'BC_searchNodes' and 'AddLinearSolverInGlobalSetup' into develop
Merge branch 'GroundwaterFlow' into develop
[PL] Add simple GWFprocess::post() writing result.
[PL] Add next steps for solve().
[PL] Add GlobalSetup as template to GW process.
[PL] Add global matrix and rhs/solution vectors.
Add LinearSolver to GWProcess.