Fix D3 dependency issue

See: https://stackoverflow.com/questions/50501633/build-issue-angular-5-has-no-exported-member-dsvrowany

Author: ghillert

ui/package.json

@@ -74,6 +74,7 @@
     "typescript": "2.5.3",
     "@compodoc/compodoc": "1.0.4",
     "@types/d3": "4.12.0",
+    "@types/d3-dsv": "1.0.31",
     "browserstack-local": "1.3.0",
     "napa": "2.3.0",
     "webpack-bundle-analyzer": "2.9.0"