temp branch for merge with master
minor fix
Made some changes to the balance velocity assimilation script.  Added regularization, and changed the bounds to reflect the vertical averaging error.
Added ISMIP-HOM simulation inverse_A, which demonstrates the minimization of the surface mass balance residual with respect to basal traction.
Merge branch 'master' of https://github.com/douglas-brinkerhoff/VarGlaS
Adding a slight modification of the Greenland balance velocity assimilation to allow it to use the new Bamber data.
Added the capability for arbitrary specification of control variables for data assimilation.  Control variables to include are now specified as a list (note that they must be valid model.* dolfin.Function type).  This is useful for including uncertainty.  For example, Greenland/data_assimilation.py now assimilates observed surface velocities with respect to both basal traction and surface velocities, assuming +/-20 percent bounds on velocities.  Many potential interesting applications of this feature.
Merge branch 'master' of https://github.com/douglas-brinkerhoff/VarGlaS
added 450m measures data, fixed urls
added greenland error tifs
gdalwarp of measures included
added new data, near=True projection
minor fix
fixed measures .tif error
fixed tifffile problem
	new file:   gland_bv_assim_bamber_errors.py
	modified:   ../../../data/data_factory.py
	modified:   ../../../data/data_factory.py
Small changes to data assimilation and addition of antarctica coarse and fine to mesh factory
Small changes to data assimilation and addition of antarctica coarse and fine to mesh factory
Using ours