Some fixes. Actuator and Sparkgap still do not work in Agros.
Final fixes for Agros to work on Windows.
Static data and date lengths tuning for Agros to save memory.
Fix export of matrices for Agros tests to pass.
Debugging failing tests in Agros.
Do not insert the atomic section in vector::add if the value is zero.
Move discrete_problem.[cpp|h] where it belongs.
Final pre-release updates.
Fix documentation.