Removed unneeded Evaluate=true annotation.

This is for #73. Annotations that have an impact on the model structure have been left in the code.
Changed initialization to avoid an overdetermined system of equation.
Merged master and update reference result.

This is for #73 to avoid merge conflicts
Merge pull request #74 from iea-annex60/issue73_evaluate

Removed evaluation to allow changes after translation, and changed initialization of mass dynamics.