Adding "giveDefaultDofManDofIDMask"-function to elements.
Adding additional set-functions to make dof-creation easier.
Added missing giveDefaultDofManDofIDMask to py-element-
Adding set-number and dofid input to InitialCondition.
Adding updateLocalNumbering to Set-class.
Moved dof-creation from dofmanager to domain (with automatic detection of necessary dof ids). Should be backwards compatible with the old input method.