Merge pull request #58 from ulvmoen/master

CRA-638 Calculate depth at top reservoir by using inverted RMS velocitie...
CRA-638 Calculate depth simbox using RMS velocities.
The depth simbox is kept in GridMapping * timeDepthMapping_ in modelGeneral.
CRA-638 Removed writing of grids to file from previous commit
Merge branch 'master' of https://github.com/CRAVA/crava