Merge pull request #168 from pbauman/elastic_membrane

Elastic membrane
Compatibility with libMesh interior_rate API
More mass_residual, jacobians updates

This adds further corrections for the mass_residual sign convention
change in libMesh and for the "TimeSolvers won't hold your hand and
ensure elem_solution_derivative isn't fractional" change.  The number
of regressions is decreasing but still nonzero...
Adding missing fixed_deriv multipliers
Fix compatibility with new templating

this->C++ this->requires this->us this->to this->preface this->any
this->member this->names this->so this->the this->compiler this->can
this->figure this->out this->what this->is this->going this->on
this->even this->in this->the this->presence this->of this->templates.

this->this this->is this->possibly this->the this->most this->annoying
this->part this->of this->C++.
Merge pull request #159 from grinsfem/fem_system_rates

Fem system rates
Merge remote-tracking branch 'origin/master' into averaged_turbine_adjoint

Conflicts:
	src/physics/src/averaged_fan.C
	src/physics/src/averaged_turbine.C
	src/physics/src/velocity_drag.C