Fix: response_ instead of response
Fix: speed up, if we are sorting no need to search for the highest response

By removing the search of highest response while computing the cloud response
we remove an OpenMP critical section which speeds up computation
Fix: there was a bug in the occupency map setting
Update: simplify
Fix: remove last from OpenMP shared statement

This speeds up by 1/100 factor since it removes lock when accessing last
Merge pull request #386 from nizar-sallem/various_fixes

Various fixes