Merge branch 'master' into mhfem

* master: (34 commits)
  Fixing compilation with nvcc.
  Fixing C++11 flag in CMakeLists.
  Refactoring tnlFunction.
  Refactoring system for function types.
  Debuging mesh.
  Renaming Ellpack network to indexed multimap.
  Implementing superentity indecis storage in storage network (=indexed multimap)
  Fixing missing superentities of vertices.
  Inserting the Ellpack network to the mesh.
  Renaming Ellpack graph to Ellpack network.
  Adding sparse Ellpack graph.
  Refactoring mesh entity.
  Refactoring the mesh.
  Refactoring the mesh.
  Refactoring the mesh.
  Refactoring the mesh.
  Refactoring the mesh.
  Refactoring the mesh.
  Refactoring the mesh.
  Fixing mesh config validator. Adding mesh simplex.
  ...