added iterator methods to TemplateVec for accessing the name id map
replaced some pointers with references
changed access to name-information for geo tree models
added missing changes for surfaces
Merge pull request #496 from rinkk/GeoTreeModelNameIterator

GeoTreeModel name access acceleration
Clang is now called AppleClang on Mac OS.
[IO] Specify full path in include.
[ML] Specify full path in includes.

Also removed unnecessary includes.
[GL] Specify full path in includes.
[ML] Make all include paths explicit.
[ML] Include declaration headers first.
Merge pull request #498 from endJunction/FullPathInIncludes

Full path in includes
[PL] Add mesh subset to initialize().
[PL] Initialize MeshSubsets and MeshComponentMap.
[PL] Rename mesh_items_all_nodes; items->subset.
[PL] Add destructor for GroundwaterFlowProcess.
[PL] Move mesh_component_map to class variables.

...from the initialize().
Also delete it in the dtor.
[PL] Add createDofMap() in Process.
[PL] Use number of node's DOF in createDOFMap().
[PL] Remove MeshComponentMap include from GW.