New icetools with FEniCS 2019.1

Updated icetools version including a pre-built singularity container for the FEniCS installation.
This container release includes:

• FEniCS 2019.1
• Ubuntu 18.04 (bionic)
• Mumps instead of Superlu_dist solver

among all the other required software.

First container version release

Working version including a pre-built singularity container for the FEniCS installation.
This container release includes:

• FEniCS 2016.2
• PETSc 3.7.6
• VTK 7.1.1
• SuperLU dist solver

among all the other required software.