Added comments
Merge branch 'master' of http://github.com/su2code/SU2

Huh?
Re-indented SU2cfd main file
Added more comments to SU2_CFD.cpp
Simplified config file logic and improved variable names
Changed geometry to Read_SU2_Format, etc.
Reindented geometry_structure.cpp
New extra output
Merge branch 'master' of https://github.com/su2code/SU2
Added GetnZone and GetiZone
Merging in some changes in the master.
Merge branch 'master' of http://github.com/su2code/SU2 into feature_UnsteadyAdjoint
fixes for unsteady finite differencing
Fix for rotating frame grid velocities for adjoint.
Merged some python changes.