Moved DashStyleConverter to Core.Common.Gui. so map and chart can both use it. Related to Issue [WTI-1268]git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@10195 5a3db67b-de53-47b5-99c8-a1c30a6650e2Former-commit-id: f36b5d3407fb81b2654a46fe34b3de61ef73693cFormer-commit-id: 809ef4ba9a9539bdb34dca5af798cf3c23c903e4