Octave interface: Updated help text
Octave Interface: Started to use Octave test

Increased fidelity of the tests now checking the return values also.
Using the octave test system to make reporting somewhat easier.
Octave interface: Fixed switched dimentions on riGetCoarseningInfo
Octave interfance: GetActiveCellCenters GetActiveCellCorners Fixed wrong CaseId addressing
 Fixed Wrong CaseId addressing
Octave Interface: getWellNames: Return Cell values

instead of char matrix.
Merge branch 'internal' of https://github.com/OPM/ResInsight into internal