MIKE URBAN hotfix 15-03-2017

This fixes several issues in the MIKE 1D and MOUSE engine: In the HTML summary, the Catchment continuity balance has been fixed for RDI/NAM and combined catchments (RDI+A etc.). The runoff model C2 (French model) using Horton Infiltration has been fixed, and also use of an unspecified lagtime has been fixed. The runoff model UHM has a performance issue fixed. In MOUSE a Horton Infiltration time issue has been fixed.