chore: Clean up unused files, imports, and work on getting end-to-end tests and unit tests running (#2272)

extensions/measurement-tracking/package.json

@@ -28,16 +28,20 @@
   },
   "peerDependencies": {
     "@ohif/core": "^0.50.0",
+    "classnames": "^2.2.6",
+    "cornerstone-core": "^2.3.0",
     "cornerstone-tools": "5.1.2",
     "dcmjs": "0.16.1",
     "prop-types": "^15.6.2",
     "react": "^16.13.1",
+    "react-cornerstone-viewport": "^4.0.4",
     "react-dom": "^16.13.1",
-    "webpack": "^4.0.0"
+    "webpack": "^4.0.0",
+    "webpack-merge": "^5.7.3"
   },
   "dependencies": {
     "@babel/runtime": "7.7.6",
-    "@xstate/immer": "^0.1.0",
+    "@ohif/ui": "^1.8.2",
     "@xstate/react": "^0.8.1",
     "xstate": "^4.10.0"
   }