Moved tnlObject_impl.h back to tnlObject.cpp since function definitions
in header files cause duplicates when building libtnl. The constructor
of tnlObject is __cuda_callable__ so it's empty definition was moved
directly to tnlObject.h to make it visible to nvcc.

Renaming getParameterType to getType.

Adding unit tests for tnlString, tnlObject and tnlArrayManager.

There is gap of missing commits.

Fixing my name in source files :).

Adding edge-skip to grid comparison function.