Code review comment for lp:~fluidity-core/fluidity/iceshelf

This branch also contains features currently being worked on in other branches, which themselves are under merge review. These features are not required by the ice shelf thermodynamics, which is what this merge concerns and should be removed from the branch.

These include:
lp:~asc/fluidity/extrudeup
lp:~asc/fluidity/regularisespatialaspect
lp:~asc/fluidity/here
lp:~asc/fluidity/dgifychoice