Feature change: When the shape file contains multi poly lines, no longer discard importing the file. Instead, log a warning when user selects the assessmentSection id that no reference line could be imported. The user will have the option to import the reference line manually Related to Issue [WTI-522] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@4300 5a3db67b-de53-47b5-99c8-a1c30a6650e2