-Fixed some index errors.
-The solving of System of Linear Equations is still debugging.
-Improved WavefrontGeometryReaderOBJ.
-Added some test models in models directory.

-Added upfpack and superLU support. You have to perform these stepts to use them:
	a) install libraries in you system
		sudo apt-get install libsuperlu3-dev libsuitesparse-dev (the package names can be different depends on your system)
	b) if you have a compiler error like 'umfpack.h: No such file or directory' check the directory where umfpack or superLU include files are stored.
	   For example '/usr/include/superlu/' or '/usr/include/suitesparse/'. If you have a different include paths, edit them in happah.pro like
  	   'INCLUDEPATH += /usr/include/superlu /usr/include/suitesparse'
	c) Modify the compiler flags in happah.pro like:
	   'LIBS += -lumfpack -lsuperlu'
Mesh to mesh deformation Phase 1 (debug mode)

Merge branch 'deformation-transfer-SS13-group2' of https://github.com/happah-graphics/happah into deformation-transfer-SS13-group2

Conflicts:
	happah/transformations/mesh_correspondence/MeshToMeshDeformation.cpp